Giant Knotweed Extract, also known as Polygonum Cuspidatum Extract, contains resveratrol, used in joint anti-inflammation and antioxidant skin care raw materials. HiSiaddi supplies original factory sources of multiple Chinese brands in China.
Sunho: It provides 98% high-purity resveratrol, 50% food grade, 30% full-spectrum extract containing polydatin/emodin and nano microcapsule type with resveratrol ≥98%, polydatin ≥5% and heavy metal content less than 1ppm. Its price is 40%-50% lower than Japanese brands with world-class quality, suitable for high-end anti-aging skin care raw material suppliers.
Baide: It offers 50% and 30% food grade resveratrol, 98% polydatin and compound anti-inflammatory formula compounded with Turmeric / Quercetin with high active ingredient retention rate. Its price is 10%-15% lower than Sunho.
HiSiaddi Exclusive Service: We customize resveratrol content of 20%-98%, select full-spectrum extract or high-purity monomer, develop anti-inflammatory and anti-aging compound raw materials by compounding Turmeric, Quercetin and Grape Seed, and offer consultation on key indicator & cost comparison of multiple brands.
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| CAS No: | 501-36-0 | Brand Name： | Multi-brand |
| MF: | C14H12O3 | Model Number： | Multi-models |
| EINECS No: | 610-504-8 | Grade: | Food grade |
| Purity： | 98% | Place of Origin： | China |
| MOQ： | 1ton | Storage: | Please refer to the product packaging or contact the customer service. |
Possible Issues You May Encounter When Purchasing Trans‑Resveratrol as a Buyer
What are the key indicator advantages of major grades from well‑known Trans‑Resveratrol brands and their impacts on end‑use applications?
What competitive services can Trans‑Resveratrol suppliers provide?
What are the qualification certifications and market feedback for target Trans‑Resveratrol brands?
How is the inventory level and supply stability of Trans‑Resveratrol suppliers?
What factors should be taken into account when selecting Trans‑Resveratrol?
…and many other related questions.
If you require more accurate, detailed and in‑depth analysis for your Trans‑Resveratrol sourcing needs, please feel free to contact us.
Main Export Grades: SF‑HZ‑10 (10% Trans‑Resveratrol, general bulk grade for health‑care products), SF‑HZ‑50 (50%, mid‑range high‑purity anti‑aging raw material), SF‑HZ‑98‑PH (98%, pharmaceutical registration‑grade high‑purity monomer, trans‑form ≥99%)
Core Competitive Indicator Advantages (Benchmarked Against Overseas Competitors & Domestic Peers, Itemized):
Raw Material Resource Advantage: Self‑operated standardized Giant Knotweed planting bases in the Qinba Mountains of southern Shaanxi plus stable wild Giant Knotweed harvesting; heavy metals Pb＜0.3ppm, As＜0.1ppm; pesticide residues compliant with EU EC1881/2006 and US FDA GRAS; high natural trans‑resveratrol content with batch‑to‑batch content fluctuation＜1.2%, boasting top‑tier stability in the industry.
Core Structural Purity: Proprietary ultrasonic‑assisted extraction + multi‑stage column chromatography + recrystallization purification process; for the 98% grade, trans‑resveratrol ≥99%, cis‑form＜0.5%, total impurities including Polydatin and Emodin＜0.2%, fully meeting USP‑NF and EP European Pharmacopoeia standards, directly applicable to pharmaceutical intermediate synthesis.
Extraction Yield: Low‑temperature ultrasonic extraction technology delivers a resveratrol extraction yield＞88%, far exceeding the industry conventional level of 70%–80%, granting strong advantages in raw material utilization and cost control.
Compliance Certifications: Complete GMP, ISO22000, KOSHER, HALAL, USDA Organic and DMF documentation support, directly facilitating intermediate registration with European and American pharmaceutical enterprises and health‑care product filing.
Production Capacity: Annual Giant Knotweed extract output of 900 tons, ranking first globally; capable of undertaking long‑term annual framework bulk orders with zero supply risks.
Cost‑Performance: Top‑tier all‑round performer across all specifications. FOB Shanghai prices: SF‑HZ‑10: USD 46–52/kg; SF‑HZ‑50: USD 235–248/kg; SF‑HZ‑98‑PH: USD 780–810/kg. Prices for equivalent grades are 40%–55% lower than Sigma‑Aldrich (USA) and over 50% lower than Euromed (France), with overwhelming cost‑performance for pharmaceutical‑grade high‑purity products against overseas competitors.
Target B‑End Buyers: Global large‑scale anti‑aging dietary supplement groups, major European and American cardiovascular health care product manufacturers, international pharmaceutical intermediate traders, raw material procurement departments of top high‑end skincare brands, and DTC longevity and health brands in the US and Europe. Typical clients: Life Extension (USA), Doppelherz (Germany), premium lines of Holland & Barrett (UK), French skincare raw material suppliers.
Specific Benefits for Downstream B‑End Buyers:
Stable supply with ultra‑large capacity; annual long‑term contract prices can be locked, unaffected by drastic fluctuations from Giant Knotweed harvesting seasons, climate and bulk commodity price hikes.
Ultra‑high trans‑form purity and extremely low ineffective cis‑form impurities, greatly reducing ineffective formulation additions in end products and enhancing efficacy stability.
Provision of full pharmacopoeia‑grade test reports and DMF documents, directly supporting overseas pharmaceutical registration and health‑care product function claim filing, shortening approval cycles.
Customizable resveratrol‑Polydatin compound ratios, particle sizes and water‑solubility modifications, compatible with multiple formulation systems for anti‑aging, hypoglycemic and skincare applications.
Excellent batch consistency ensures stable production processes for tablets, capsules and serums with extremely low defective rates.
Specific Benefits for Overseas End Consumers: Natural trans‑resveratrol delivers antioxidant effects, activates longevity protein SIRT1, protects cardiovascular systems and assists blood sugar regulation. Free from side effects of chemically synthesized alternatives, it caters to overseas consumers pursuing anti‑aging wellness, cardiovascular care for middle‑aged and elderly groups, high‑end anti‑wrinkle skincare and fat loss & blood sugar control, with far higher recognition of natural‑source products than chemically synthesized resveratrol.
Main Export Grades: TY‑HZ‑5‑FOOD (5%, basic food‑grade grade), TY‑HZ‑10‑STD (10%, flagship export grade for health‑care products), TY‑HZ‑POL‑15 (15% Polydatin compound grade)
Core Competitive Indicator Advantages:
Large‑Scale Cost Control: Continuous countercurrent extraction + membrane separation concentration process cuts unit energy consumption by 24% compared with traditional technologies, placing its 10% grade among the lowest‑cost bulk suppliers in China.
Precise Impurity Control: Targeted removal of irritant impurities such as Emodin and tannins; extracts feature non‑irritating odor and pale yellow color, suitable for oral tablets and hard capsules.
Compound Formulation Advantage: Polydatin‑resveratrol compound delivers synergistic antioxidant and anti‑inflammatory effects, ideal for hit compound anti‑aging formulations overseas.
Multi‑Origin Stable Supply: Integrated Giant Knotweed producing areas in Shaanxi, Hubei and Hunan with strong resilience against raw material shortages.
Cost‑Performance: Optimal choice for bulk health‑care‑grade procurement. FOB price of TY‑HZ‑10‑STD: USD 42–48/kg, USD 4–5/kg lower than Senfu’s equivalent grade, offering strong price advantages for bulk orders.
Target B‑End Buyers: European and American small‑to‑medium anti‑aging & cardiovascular health care product OEM manufacturers, dietary supplement brands, health food raw material traders in Southeast Asia and the Middle East, raw material suppliers for cross‑border e‑commerce private‑label brands, and basic functional food factories.
Specific Benefits for Downstream B‑End Buyers:
Lowest bulk procurement cost enables sharp reduction of end‑product pricing and enhanced competitiveness in mass markets.
Non‑irritating impurities ensure high oral safety, minimizing consumer complaints regarding allergies and gastrointestinal discomfort from end products.
Polydatin‑compounded grades create differentiated selling points, avoiding homogeneous competition from single‑component resveratrol products.
Stable delivery cycle of 7–10 days with rapid emergency replenishment response.
Specific Benefits for Overseas End Consumers: Gentle antioxidant effects, improved blood circulation and anti‑inflammatory properties for daily anti‑aging maintenance and basic cardiovascular care for middle‑aged and elderly groups. Compound grades offer synergistic efficacy and higher cost‑performance, suitable for mass health consumers.
Main Export Grades: LM‑HZ‑50‑HP (50% high‑purity trans‑resveratrol), LM‑HZ‑98‑CUSTOM (98% customized high‑purity grade), LM‑HZ‑MICRO (microencapsulated resveratrol with enhanced water solubility)
Core Competitive Indicator Advantages:
Precise Customization Capability: Accurate control of trans‑resveratrol purity from 10% to 98%, targeted removal of trace impurities, suitable for pharmaceutical enterprise R&D and high‑end skincare formulations.
Water‑Solubility Modification: Microencapsulation/nano‑dispersion technology boosts water solubility of lipophilic resveratrol by 60% and oral bioavailability by 45%, solving the low‑absorption pain point of conventional resveratrol.
Dosage Form Innovation: Customizable oil‑soluble and nano‑emulsion forms compatible with serums, stock solutions and oral liquids.
Flexible Small‑Batch Supply: Minimum order quantity as low as 5kg with sample delivery in 3–5 days, catering to emerging brands and laboratory R&D.
Cost‑Performance: Optimal for small‑batch high‑purity customization. FOB price of LM‑HZ‑50‑HP: USD 228–242/kg, over 50% lower than customized imported raw materials from Europe and America, minimizing R&D and sampling costs.
Target B‑End Buyers: Emerging European and American DTC longevity and anti‑aging brands, high‑end anti‑aging skincare raw material suppliers, small‑to‑medium pharmaceutical R&D enterprises, laboratory research institutions, and functional oral liquid/gummy brands.
Specific Benefits for Downstream B‑End Buyers:
Rapid small‑batch supply matching the fast product launch and formulation iteration pace of emerging brands.
Water‑solubility modification expands applications in oral liquids and skincare sectors.
Customized purity precisely matches high‑end formulations, creating differentiated selling points of high activity and high absorption.
Specific Benefits for Overseas End Consumers: Greatly improved absorption efficiency delivers faster anti‑aging and antioxidant results. For skincare applications, it promotes collagen production and anti‑photoaging effects, catering to young high‑end anti‑aging consumers overseas.
Main Export Grades: SN‑HZ‑10‑JP (10% Japan‑specific grade compliant with Japanese MHLW standards), SN‑HZ‑50‑AU (50% Australia‑specific grade compliant with Australian TGA standards), SN‑HZ‑20‑KO (20% South Korea‑specific grade compliant with South Korean KFDA standards)
Core Competitive Indicator Advantages:
Perfect Adaptation to Testing Standards: Customized full testing packages tailored to Japanese, South Korean and Australian regulations; precise quantification of trans‑resveratrol, multi‑pesticide residue screening, strict internal heavy metal control, and microbial compliance with local pharmacopoeia standards, achieving＞99% customs clearance & filing approval rate.
Stringent Internal Control Standards: Total bacterial count＜50cfu/g, mold and yeast＜5cfu/g, far exceeding national Chinese standards and general export criteria.
Full‑Process Traceability: Each batch traced to Giant Knotweed planting plots and harvesting time, meeting strict traceability regulations in Japan and South Korea.
Mature market channels in Japan and South Korea with high recognition among local health food and cosmeceutical enterprises.
Cost‑Performance: Optimal for compliance‑oriented supply to Japan, South Korea, Australia and New Zealand. FOB price of SN‑HZ‑10‑JP: USD 48–54/kg, over 43% lower than locally imported raw materials in Japan.
Target B‑End Buyers: Japanese longevity health food enterprises, South Korean anti‑aging cosmeceutical groups, Australian TGA‑certified health care product manufacturers, New Zealand natural health brands, and Japanese & South Korean pharmaceutical raw material traders.
Specific Benefits for Downstream B‑End Buyers:
Direct compliance with local testing standards eliminates secondary testing requirements and shortens drug regulatory filing cycles.
Ultra‑low microbial and heavy metal levels avoid regulatory penalties and product removal risks.
Comprehensive traceability system builds trust endorsement for high‑end market consumers.
Specific Benefits for Overseas End Consumers: Exceptional safety aligns with high‑end wellness and cosmeceutical skincare trends in Japan and South Korea. Natural plant‑based sources enjoy extremely high acceptance in the East Asian anti‑aging market.
Main Export Grades: TRY‑HZ‑5‑STD (5% economical basic grade), TRY‑HZ‑10‑BASIC (10% economical standard grade)
Core Competitive Indicator Advantages:
Extreme Cost Control: Simplified purification processes remove high‑cost refining steps while ensuring trans‑resveratrol compliance, cutting costs by 17%–21% compared with top‑tier brands.
Complete Basic Compliance: ISO, HACCP and food‑grade certifications meeting requirements of Southeast Asian, Middle Eastern, Latin American and African markets.
Shipping‑Adapted Packaging: Moisture‑proof sealed iron drums suitable for long‑distance sea transportation and high‑temperature/humid environments.
Strong capacity for ultra‑large‑volume orders, ideal for low‑price high‑volume markets.
Cost‑Performance: Top cost‑performance bulk supplier for developing countries. FOB price of TRY‑HZ‑10‑BASIC: USD 39–44/kg, 1/3–1/2 the price of overseas brands.
Target B‑End Buyers: General health care product manufacturers in Southeast Asia, the Middle East, Latin America and Africa, basic anti‑aging dietary supplement brands, local raw material wholesale traders, and economical health food brands.
Specific Benefits for Downstream B‑End Buyers:
Ultra‑low prices help clients capture mass health consumption markets in lower‑tier regions.
Basic compliance meets customs clearance thresholds for emerging markets with large supply volume and stable pricing.
Suitable for long‑term high‑volume sales to rapidly tap emerging anti‑aging health markets.
Specific Benefits for Overseas End Consumers: Affordable natural antioxidant raw materials make anti‑aging and cardiovascular care products accessible to the general public, boosting the popularity of regional health foods.
| Comparison Dimension | Shaanxi Senfu Biology | Xi’an Tianyi Biology | Hunan Lvman Biology | Shaanxi Sinuote Biology | Hubei Tianruiyuan Biology |
| Export Ranking | 1st | 2nd | 3rd | 4th | 5th |
| Core Mainstream Grades | SF‑HZ‑10/50/98‑PH | TY‑HZ‑5‑FOOD/10‑STD/POL‑15 | LM‑HZ‑50‑HP/98‑CUSTOM/MICRO | SN‑HZ‑10‑JP/50‑AU/20‑KO | TRY‑HZ‑5‑STD/10‑BASIC |
| Core Key Competitive Indicators | Self‑operated Giant Knotweed bases in Qinba Mountains; trans‑form purity ≥99%; high ultrasonic extraction yield; 98% grade compliant with EP/USP; DMF support; global No.1 production capacity | Large‑scale continuous processes; lowest bulk costs; removal of irritant impurities; Polydatin compound formulations; multi‑origin stable supply | Precise purity customization; microencapsulation enhances water solubility & absorption; oil‑soluble/nano dosage forms; flexible small‑batch supply; strong R&D compatibility | Compliance with local pharmacopoeia standards of Japan, South Korea, Australia & New Zealand; strict internal microbial control; full‑process traceability; high customs clearance rate | Extreme cost control; complete basic compliance; shipping‑resistant packaging; suitable for high‑volume sales in emerging markets |
| FOB Shanghai Price (USD/kg) | 46‑52 (10%); 235‑248 (50%); 780‑810 (98%) | 42‑48 (10%) | 228‑242 (50%) | 48‑54 (10% Japan‑specific grade) | 39‑44 (10%) |
| Cost‑Performance Positioning | All‑round performer across all specifications, covering pharmaceutical intermediates & health‑care products; top choice for benchmarking against overseas premium brands | Optimal bulk health‑care‑grade cost‑performance; top choice for large‑volume procurement | Optimal small‑batch high‑purity customization; top choice for pharmaceutical R&D & emerging brands | Optimal compliance‑oriented supply for Japan, South Korea, Australia & New Zealand | Top economical cost‑performance for emerging markets |
| Target B‑End Buyers | Global large‑scale anti‑aging health care product groups, major European & American cardiovascular health manufacturers, international pharmaceutical intermediate traders, high‑end skincare brands | European & American small‑to‑medium health care product OEMs, compound anti‑aging brands, Southeast Asian & Middle Eastern traders, cross‑border e‑commerce brands | Small‑to‑medium pharmaceutical R&D enterprises, emerging DTC anti‑aging brands, high‑end skincare raw material suppliers, laboratory institutions | Health food & cosmeceutical factories in Japan, South Korea, Australia & New Zealand, local pharmaceutical traders, TGA/KFDA‑compliant factories | Health care product manufacturers in Southeast Asia, the Middle East, Latin America & Africa, economical anti‑aging brands, bulk wholesalers |
| Core Benefits for B‑End Buyers | Stable ultra‑large‑volume supply; ultra‑high trans‑form purity; complete pharmacopoeia & DMF documentation; excellent batch stability | Lowest bulk procurement cost; non‑irritating impurities; differentiated Polydatin compound products; fast delivery | Rapid small‑batch sampling; absorption‑enhancing modification expands application sectors; customized purity reduces trial‑and‑error costs | Compliance with local standards; no secondary testing required; comprehensive traceability; low compliance risks | Ultra‑low pricing; basic compliance met; suitable for long‑term high‑volume sales in lower‑tier markets |
| Core Benefits for Overseas End Consumers | Natural trans‑resveratrol; activates longevity proteins; cardiovascular protection & blood sugar control; high recognition in high‑end anti‑aging markets | Gentle antioxidant & anti‑inflammatory effects; daily anti‑aging maintenance; meets basic health needs of middle‑aged & elderly groups | Higher absorption efficiency; anti‑photoaging skincare effects; caters to young high‑end consumers | Exceptional safety; aligns with Japanese & South Korean wellness & cosmeceutical culture; high trust in high‑end markets | Affordable antioxidant raw materials; popularizes anti‑aging health consumption in emerging markets |
| Overseas Benchmark Competitors | Sigma‑Aldrich (USA), Euromed (France) | European bulk plant extract suppliers | High‑end customized raw materials of Oryza (Japan) | South Korean local fine chemical enterprises, Japanese anti‑aging raw material suppliers | Local plant extract manufacturers in Southeast Asia |
| Core Export Markets | Global mainstream markets: Europe, America, Japan, South Korea, Australia, New Zealand, India | Global bulk health‑care product markets, compound anti‑aging channels | Small‑to‑medium European & American pharmaceutical enterprises, DTC brands, high‑end skincare markets | Japan, South Korea, Australia, New Zealand | Southeast Asia, the Middle East, Latin America, Africa |
HiSiaddi, a new-type foreign trade service provider driven by dual engines of technology transformation and foreign trade services, have formed a "1+2+3+4=1" product service system by 1 foreign trade salesperson with over 3 years of experience, 2 R&D teams, 3 high-quality suppliers, and 4 warehouses to serve 1 product demand.
Relying on this service system, HiSiaddi boasts deeper expertise in R&D optimization and technical processes of trans resveratrol products than most foreign trade companies, better insight into market demands and competitive advantages of various trans resveratrol brands than individual manufacturers, and more thorough understanding of the trans resveratrol foreign trade market than research institutions.
HiSiaddi only hires foreign trade sales staff with more than 3 years of working experience, who must receive over 6 months of training from the R&D team and foreign trade team before serving customers.
(1)trans resveratrol Basic Guarantee Service: Supported by the foreign trade team and the company’s service system, we provide customers with one-stop full-process document handling services, including but not limited to: presentation and application of various compliance certificates for trans resveratrol; provision of third-party test reports and resolution of quality warranty feedback issues.
(2)trans resveratrol Exclusive Premium Service: Backed by the R&D team, we deliver customized product and technical consulting services for customers, including but not limited to: comparative analysis of core index compatibility and costs across all trans resveratrol brands; regular sharing of market trends for trans resveratrol products.
We conduct in-depth cooperation with source manufacturers through technology transformation and maintain close internal collaboration with the foreign trade team to deliver technical training for sales staff. This enables more professional trans resveratrol customization and provides research-grade consulting services for trans resveratrol brand matching recommendation and optimization of trans resveratrol application solutions.
(1)trans resveratrol Research-Grade Customization Service: Specialized optimization solutions for irritant impurities. We customize raw materials with different emodin removal grades for oral health supplements and skincare products: ultra-emodin-free grades for oral use, trace active component controlled grades for skincare, eliminating gastrointestinal irritation and skin sensitization risks from the source.
Precise gradient customization of trans-resveratrol purity: any trans purity specification from 5% to 98% available on demand, with controlled contents of polydatin, tannins and heavy metals to precisely match differentiated requirements of health supplements, skincare and pharmaceutical intermediates.
(2)trans resveratrol Research-Grade Consulting Service: Trans-form purification + water-soluble modification + formula compounding technical services (core differentiation). Targeting the biggest pain points of the resveratrol industry — poor absorption of liposoluble ingredients, easy oxidation, gastrointestinal irritation from emodin and ineffective cis-isomers, we provide exclusive technical services:
Targeted cis-isomer removal process to further elevate trans-resveratrol purity and reduce emodin impurities to extremely low levels;
Microencapsulation, liposomal encapsulation and nanodispersion modification to drastically boost water solubility and oral absorption rate;
Custom compound formulas: Resveratrol + Polydatin + Quercetin + Grape Seed Extract to create overseas hit longevity anti-aging compound raw material packs;
Oil-soluble modification adapted to high-end anti-aging serums, essential oils and clinical skincare formulas.
Such technical services are entirely unavailable from traditional overseas raw material suppliers, directly helping purchasers build formula barriers and avoid homogenized price wars.
Our foreign trade and R&D teams collaborate to conduct multi-round evaluations and cooperation including preliminary market research, on-site factory inspections, product testing, in-depth technology transformation partnerships and product procurement cooperation. We screen around 3 branded manufacturers with reliable quality, stable supply, sound reputation and strong development potential.
(1) Initiative to Secure Lower Prices: Long-term cooperation via technology transformation and exclusive distribution allows us to source factory-direct raw materials at more competitive prices.
(2) trans resveratrol Long-Term Supply Chain Guarantee Service: Long-term partnerships in technology transformation and distribution effectively strengthen production process monitoring, full-lot traceability, batch stability control, and compensation guarantees for substandard third-party test results.
We have 4 warehouses, which are jointly operated and managed with suppliers to store hot-selling products.
(1)trans resveratrol Fast Localized Delivery & Improved Emergency Resolution: Our four warehouses are located at Qingdao Port in North China, Ningbo Port in East China, Shenzhen Port in South China, and Zhengzhou, China’s inland logistics hub, ensuring timely shipment of trans resveratrol. Meanwhile, on-site staff can promptly resolve transport accidents, packaging defects and export compliance issues involving trans resveratrol.
(2)trans resveratrol Price Fluctuations & Support Custom Packaging: We stock up in advance to ease severe price surges during trans resveratrol peak demand seasons. Our proprietary warehouses can fully accommodate personalized customer requirements for packaging, labels and other customizations.
As a new-type foreign trade service provider driven by both technology transformation and foreign trade services, HiSiaddi has established a "1+2+3+4=1" service system and can supply trans resveratrol sourced from multiple well-known original manufacturers. As a R&D-focused foreign trade enterprise, HiSiaddi will systematically sort out common difficulties faced by B2B purchasers sourcing trans resveratrol from China and propose targeted solutions.
If you require more professional and in-depth analysis on trans resveratrol sourcing, please contact HiSiaddi customer service.
1. Low trans-resveratrol content and excessive cis-isomers: High-end overseas raw material standards designate trans configuration as the active ingredient, while cis-resveratrol exhibits negligible biological activity. Inadequate raw material purification results in substandard active ingredients and excess impurities, drastically reducing finished product efficacy, failing third-party efficacy testing, creating inconsistencies between nutrition labels and measured values, and violating food labeling regulations.
2. Extremely poor light and thermal stability causing rapid degradation and discoloration during processing and storage: Trans resveratrol is highly sensitive to light and high temperatures, readily decomposing during granulation, drying and routine storage with continuous content decline and powder discoloration from white to pale yellow/brown, directly leading to finished product scrapping.
3. Excessive pesticide and extraction solvent residues triggering FDA sampling and product recalls: Raw material giant knotweed accumulates pesticides during cultivation; extraction and purification processes may retain alcohol and ester solvents. Europe and the US enforce ultra-low ppm limits, and non-compliance results in full batch removal, recalls and severe brand losses.
4. High levels of plant residues and miscellaneous flavonoids triggering gastrointestinal discomfort after oral consumption: Crude extracts contain crude fiber, polysaccharides and miscellaneous flavonoids, causing bloating and discomfort at high oral doses, failing to meet safety requirements for high-end oral and pharmaceutical grades.
5. Excess moisture and slight hygroscopicity leading to tableting sticking and capsule caking: Moisture content >0.4% creates sticky powder prone to tableting sticking, lamination and uneven tablet weight; capsule contents cake during shelf life with abnormal disintegration, violating USP/EP formulation standards.
6. Excessive heavy metals and microorganisms blocking access for high-end oral and sterile research reagents: Pharmaceutical and research-grade raw materials enforce strict limits on heavy metals and pathogenic bacteria; non-compliance results in market access bans and invalid experimental data.
1. Multi-stage extraction + chromatographic directional separation to stabilize trans content and control cis impurities: Low-temperature countercurrent extraction + high-pressure liquid phase refining delivers stable trans-resveratrol content as requested, with cis-isomers strictly controlled within compliant ranges to guarantee high biological activity.
2. Light-shielded antioxidant coating + nitrogen blanketing to inhibit photodegradation and oxidative degradation: Food-grade light-shielded antioxidant encapsulation applied to powder; full production and packaging under nitrogen blanketing and light shielding. Content attenuation <2% with no obvious discoloration after 12 months of cool light-shielded storage.
3. Source planting control + multi-stage vacuum desolvation to reduce pesticide and solvent residues far below regulatory limits: Standardized fixed planting bases with controlled pesticide application; combined multi-stage vacuum solvent removal and pure water rinsing reduce pesticide and solvent residues to less than 50% of EU regulatory limits.
4. Membrane filtration + fine impurity removal to eliminate giant knotweed crude fiber and miscellaneous impurities: Ultrafiltration and precision screening remove giant knotweed residues, miscellaneous flavonoids and crude polysaccharides for mild oral compatibility suitable for medical and high-end dietary applications.
5. Ultra-low-temperature vacuum drying to lock moisture ≤0.3% for free-flowing, anti-hygroscopic powder: Low-temperature vacuum drying controls moisture content, delivering excellent powder flowability for smooth tableting with no sticking and stable tablet/capsule morphology over shelf life.
6. Class 10,000 sterile workshop + heavy metal chelation filtration for dual compliance: Sterile production and packaging block microbial contamination at source; specialized heavy metal chelation treatment meets multi-tiered standards for food, pharmaceutical and research applications.
1. Slow cold-water dissolution with rapid yellowing and turbidity under light exposure in liquid products: Unmodified raw powder exhibits weak cold-water solubility; liquid formulations degrade rapidly upon light contact, causing discoloration and clouding, substandard appearance and gradual quality decline over shelf life.
2. Poor powder flowability causing bridging and uneven feeding in automated batching systems: Powder agglomeration blocks feeding hoppers in loss-in-weight batching equipment, creating large feeding deviations and inconsistent active ingredient content across production batches.
3. Bitter herbal taste from giant knotweed raw materials impairing edible palatability: Natural giant knotweed extracts carry bitter herbal notes that negatively impact flavor in beverages, candies and chewable tablets.
4. Uneven particle size distribution creating gritty mouthfeel in solid products: Irregular particle diameters hinder uniform blending and degrade sensory experience for high-end food applications.
5. Strong hygroscopicity causing rapid caking during open workshop use and increased production waste: Combined moisture absorption and oxidation degrade powder under workshop light and humidity; secondary crushing accelerates degradation and raises defective product rates.
1. Ultrafine grinding + hydrophilic modification + light-stabilizing system for rapid cold-water dissolution and long-term color stability: Superfine grinding paired with food-grade hydrophilic modification enables fast cold-water dissolution; integrated light-shielding and antioxidant auxiliary systems maintain clear, discoloration-free solutions after 72 hours refrigerated storage at 0°C.
2. Flow modification for loose powder and precise batching metering: Compliant flow aids eliminate feeding blockages with batching error ≤1% and consistent cross-batch quality.
3. Encapsulation adsorption + low-temperature negative-pressure deodorization & debittering to reduce herbal bitterness and odor: Dual deodorization processes drastically attenuate bitter and herbal off-notes without interfering with the base flavor of finished food products.
4. Jet milling + precision classification for fine, uniform particle size and smooth mouthfeel: Standardized particle diameters enable full blending and eliminate gritty texture in solid formulations.
5. Light-shielded moisture-proof coating + high-barrier hermetic packaging for anti-caking performance after opening: Surface light-shielded moisture-proof encapsulation paired with light-proof sealed bags prevents moisture absorption and caking under regular workshop conditions, reducing production waste.
1. Heavy metal and inorganic arsenic levels approaching regulatory limits failing Japan’s Ministry of Health, Labour and Welfare sampling: Plant extracts readily accumulate heavy metals and arsenic; Japan and South Korea enforce the world’s strictest limits, with borderline levels triggering domestic sales bans and purchase refusals.
2. Missing food filing and organic certifications prohibiting efficacy claims and limiting product premium potential: Absence of Japanese food raw material filings and organic JAS certifications prevents labeling of antioxidant and anti-aging benefits, restricting sales to low-margin distribution channels only.
3. Exacting light stability standards with full batch rejection upon minor discoloration: Japanese oral liquids and high-end dietary supplements demand consistent color; raw material degradation-induced discoloration triggers full batch rejection.
4. Fluctuating batch content and isomer ratios destabilizing high-end finished products and laboratory data: Premium end products and lab testing require ultra-consistent raw material performance; indicator fluctuations create inconsistent finished product efficacy and poor repeatability of experimental data, damaging brand reputation.
1. Multi-stage ion exchange + deep chelation impurity removal to reduce indicators far below Japan & South Korea limits: Multi-pass filtration and specialized heavy metal chelation control lead, arsenic, cadmium and other metals to less than 40% of Japanese and South Korean regulatory thresholds for smooth official sampling passage.
2. Agency support for regional filings and organic certifications with full Japanese-language compliance documents: Assistance with Japanese food raw material filings and organic JAS certifications enables legal efficacy labeling and higher end-product profit margins.
3. Enhanced light-stabilized formulation for permanently clear aqueous solutions: Upgraded stabilization systems maintain clear, discoloration-free aqueous solutions after 30 days ambient storage under standard light exposure to meet strict appearance requirements for premium products.
4. Fully automated closed-loop production with core indicator fluctuations ≤0.4% for consistent quality: End-to-end automated extraction, purification, drying and packaging with real-time monitoring of trans content and cis-impurities minimizes cross-batch variance.
1. Low-cost raw materials adulterated with starch, glucose and cheap plant powder diluting active trans-resveratrol content: High-purity extract costs remain elevated; low-tier suppliers dilute pure material with inert fillers and inferior plant extracts, reducing active efficacy and triggering frequent returns and complaints.
2. Unstandardized content, moisture and flavor indicators causing constant production parameter adjustments: Absent standardized quality control creates extreme cross-batch variance, requiring repeated modification of feeding, tableting and blending parameters, cutting production efficiency by over 20% and raising defective rates.
3. Severe moisture absorption, oxidation, discoloration and caking under hot, humid and high-light storage/transport conditions leading to full batch waste: Local tropical climates feature high heat, humidity and intense sunlight; basic packaging lacks light, oxygen and moisture barriers, accelerating raw material degradation and full batch scrappage.
4. Missing basic compliance documents causing customs detention and filing failures: Absence of English COAs, MSDS, Halal certifications and pesticide residue reports blocks local food filing and triggers customs inspection seizures.
5. Lack of technical guidance accelerating degradation through improper storage and handling, amplifying raw material waste: Absent light-shielded, moisture-proof and oxygen-isolated usage protocols increase unnecessary raw material losses.
1. Region-exclusive economical grades with zero intentional adulteration and stable active content: Simplified high-purity refining processes without starch or plant powder fillers; trans-resveratrol content remains consistent at a price 22%–27% lower than premium high-purity grades to meet basic mass-market product demands.
2. Standardized locked core indicators with fixed production parameters to reduce equipment adjustments: Stabilized content, moisture and solubility parameters allow fixed production workflows and improved manufacturing efficiency.
3. Double-layer light, oxygen and moisture barrier packaging + anti-caking additives adapted to local climates: PE inner film + woven bag double-layer light-proof sealed packaging paired with anti-caking agents prevents moisture absorption, caking and discoloration for 3 months under 45°C high-humidity and regular light exposure.
4. Full English compliance documents (including Halal certificates and pesticide residue reports) supplied with every batch for smooth customs clearance and filing: Test reports, MSDS, Halal certifications and pesticide residue data accompany each shipment to support local filing and eliminate detention risks.
5. Basic light-shielded and moisture-proof storage guidance to reduce raw material waste: Simplified protocols for warehouse storage, feeding and light protection minimize avoidable material losses.
1. Unscrupulous suppliers dilute high-purity trans resveratrol with cheap plant powder and starch with falsely labeled content, triggering compensation claims: Widespread market adulteration dilutes genuine material with fillers and low-purity extracts, causing finished product efficacy failure, distributor liability for compensation, customer churn and brand reputation collapse.
2. Thin packaging lacking light and oxygen barriers leading to premature oxidative discoloration during marine transit: Basic single-layer packaging fails to block light, oxygen and moisture; transport damage accelerates raw material degradation and yellowing resulting in failed incoming inspections.
3. Absence of sealed light-shielded warehouse storage causing sustained activity loss and discoloration leading to rejection by premium clients: High photosensitivity of trans resveratrol results in quality deterioration under simple storage conditions, with direct rejection by top brands and laboratories.
4. Missing high-end compliance certifications blocking access to premium supply chains in Europe, US, Japan and South Korea: Absence of FDA, REACH, organic, pesticide/solvent full test reports disqualifies suppliers from high-end client audits, limiting sales only to low-tier distribution channels.
5. Open repackaging workflows exposing material to light, air and moisture causing secondary degradation and contamination with inconsistent small-batch quality: Repackaging facilities lacking closed, light-shielded, oxygen and moisture-isolated equipment drive continuous powder deterioration, inconsistent small-pack quality and reduced end-customer repeat purchase rates.
1. Direct supply from original manufacturers with zero adulteration or dilution, full batch test reports and global re-test support: Authentic giant knotweed extract shipped pure with no filler dilution; every batch includes full COAs covering trans/cis content, pesticide residues, solvent residues, heavy metals and microorganisms, supporting third-party testing worldwide.
2. Custom thickened light, oxygen and moisture barrier packaging with compression and leak resistance for stable marine transit: Reinforced fiber drums lined with double-layer light-proof aluminum foil high-barrier hermetic inner bags, factory-tested for compression and leak prevention to isolate light, oxygen and moisture during shipping.
3. Nitrogen-blanketed vacuum light-shielded packaging + storage guidance for 12-month stable quality: Uniform nitrogen-filled vacuum light-shielded packaging paired with recommended cool storage below 25°C maintains consistent content, color and solubility without obvious deterioration for smooth premium warehouse incoming inspections.
4. One-stop full set of mainstream global compliance documents: Provision of FDA, REACH, organic, Halal, KOSHER, Japan/South Korea localized filings and special pesticide/solvent residue reports to enable entry into high-end markets.
5. Standardized closed light-shielded repackaging protocols to unify quality across bulk and small packages: Guidance on closed, light, oxygen and moisture-isolated repackaging equipment eliminates external interference and standardizes performance across bulk and small packaging for stable end-customer repeat purchases.
If you require more professional and in-depth analysis on trans resveratrol sourcing, please contact HiSiaddi customer service.
Conflicting customized indicators: The client required stable trans-resveratrol content ≥30%, alongside polydatin ≤2.5% and emodin <0.3%. Mass-produced standard Polygonum cuspidatum extracts on the market failed to satisfy all three limits simultaneously; conventional manufacturers could only meet two of the three criteria.
Traceability compliance for raw materials: California state regulations mandated full cultivation traceability of raw materials and comprehensive testing for 206 pesticide residues. Lacking access to Chinese origin resources, the client could not source Polygonum cuspidatum from USDA organic-certified planting bases.
Export compliance barriers: As a new dietary ingredient in the US, the customized extract required supporting GRAS filing documents and Kosher certification reports. Unfamiliar with China’s commodity inspection and customs declaration documentation standards, the client’s previous customization attempts with two domestic manufacturers stalled entirely due to document and specification issues.
Raw material control: Partnered with standardized GAP-certified Polygonum cuspidatum planting bases in Guangyuan, Sichuan, securing a designated 300-mu harvest plot. Raw materials were harvested in autumn, the peak period for trans-resveratrol accumulation in Polygonum cuspidatum, to minimize baseline pesticide residue and heavy metal levels from the source. Land parcel traceability ledgers and field test reports were provided for all batches.
Customized processing technology: Collaborated with manufacturer R&D teams to adjust segmented macroporous resin purification processes, optimize elution gradients, ethanol extraction concentrations and concentration temperatures. After 12 sample trials and third-party SGS testing, the final customized extract was finalized: trans-resveratrol 30.2%, polydatin 2.21%, emodin 0.22%, all falling within the client’s specified limits.
Full compliance support: The HiSiaddi team compiled complete supplementary documents for FDA-GRAS filing, batch-by-batch COA certificates of analysis, and full-spectrum pesticide residue test reports. The team also arranged Kosher certification application, commodity inspection and phytosanitary certificates, and optimized HS coding to mitigate risks of US customs detention.
Formulation incompatibility issues: When compounded with glucosamine to manufacture medicinal granules, the Polygonum cuspidatum extract mixture caked and separated after 72 hours of ambient storage. Granule disintegration time exceeded the standard by three times, and finished product dissolution rates failed specifications, halting capsule filling workflows.
Manufacturing process defects: The extract powder exhibited poor flowability, causing automatic feeding machines to clog and screw adhesion. Over 18% of trans-resveratrol activity was lost during high-temperature granulation, drastically inflating production costs and suspending the entire 2-ton raw material batch.
Physical and chemical raw material analysis: HiSiaddi engineers collected samples on-site at the Canadian pharmaceutical plant. HPLC liquid chromatography and water activity testing revealed root causes: standard Polygonum cuspidatum extracts contained excessive free sugars and residual ethanol, triggering moisture absorption and caking upon compounding; widely varying particle sizes (20 mesh to 120 mesh) impaired powder flowability.
Raw material processing optimization: Coordinated domestic production facilities to add a low-temperature spray refining procedure to remove free soluble polysaccharides and residual ethanol. Uniform particle sizing between 80–100 mesh was achieved via graded crushing and sieving, with moisture content strictly controlled below 3.2%.
End-product formulation improvement: Based on the client’s original formula, three revised compounding formulas were proposed. Recommendations included pre-blending microcrystalline cellulose as a carrier, adjusting feedstock ratios, and lowering granulation drying temperature from 75°C to 52°C to reduce thermal degradation of active trans-resveratrol.
Lead time
Quantity (ton) | 0 - 10 | 10 - 30 | > 30 |
Lead time (days) | 7 | 15 | To be negotiated |
The monthly inventory volume of trans resveratrol is 10 tons, with appropriate adjustments upwards or downwards in response to peak and off-peak seasons.
HiSiaddi safeguards the supply stability of trans resveratrol through the following measures:
(1) Performance evaluation and screening of trans resveratrol brand factories based on on-time delivery rate, batch pass rate, timeliness of risk alerts, and completeness of documentation to assess their supply stability.
(2) For each mainstream model or major grade of trans resveratrol, secure 1 primary high-quality brand manufacturer and 2 backup high-quality manufacturers.
(3) Each factory operates independent production lines in separate production zones to prevent production halts caused by major unforeseen incidents such as environmental production suspensions and power outages.
Through long-term cooperation with brand manufacturers via technology commercialization and authorized distribution channels, HiSiaddi can effectively strengthen supervision over the production processes of brand manufacturers, optimize full-process traceability management, improve batch stability control, and further reinforce real-time monitoring of the supply stability of trans resveratrol products.
Long-term Annual Framework Supply Guarantee Agreement. HiSiaddi signs 12-month long-term agreements with leading manufacturers. The agreements specify the minimum guaranteed supply volume, maximum price hike range, and priority production scheduling rights during peak seasons. It is stipulated that manufacturers shall issue a 30-day prior written notice if production is suspended due to environmental rectification or equipment maintenance, and backup manufacturers will be activated to replenish goods accordingly.
We have 4 warehouses, which are jointly operated and managed with suppliers to store hot-selling products.The four warehouses are located at Qingdao Port in North China, Ningbo Port in East China, Shenzhen Port in South China, and Zhengzhou, China’s inland logistics hub. This setup guarantees sufficient supply and timely shipment of trans resveratrol during peak seasons.
HiSiaddi issues a rolling demand forecast covering the subsequent three months on the 25th of each month, allowing manufacturers to reserve production capacity in accordance with the forecast. Any new urgent orders from overseas clients will be prioritized to draw on inventories or production capacity from backup manufacturers.
Unstable logistics for trans resveratrol will extend delivery lead times. HiSiaddi has established alternative arrangements covering multiple freight forwarders, ports and transportation solutions:
(1) Binding of multiple professional chemical freight forwarders for trans resveratrol
Each product is assigned 2 to 3 freight forwarders with hazardous chemical/food transport qualifications affiliated with different shipping lines. Alternative sailing schedules can be switched to immediately in case of space shortages or customs inspections on a single shipping route.
(2) Backup transportation solutions for trans resveratrol
Ocean freight serves as the standard mode; air freight and rail freight are reserved as alternatives for urgent orders. Long-term agreements for temperature-controlled containers are signed for temperature-sensitive and perishable food additives to secure shipping space.
(3) Visual tracking and digital early warning for trans resveratrol
Freight forwarders synchronize daily updates on container loading, customs declaration, vessel loading and port arrival milestones. If customs inspection occurs, replenishment from backup inventory will be initiated immediately to shorten client waiting periods.
Full-chain digital early warning automatically monitors four categories of risks:
Factory side: Expiring supplier environmental assessment certificates, renewal of production permits, scheduled major equipment overhauls, and notifications of price hikes for upstream raw materials;
Inventory side: Inventory falling below safety thresholds, excessive inventory age, and batches failing quality inspection;
Logistics side: Shipping line space shortages, strikes at destination ports, and updates to customs policies;
Overseas side: Revisions to additive regulations and adjustments to import restriction lists in target countries.
Early warning notifications are automatically pushed to procurement and business leads, allowing backup suppliers or inventory contingency plans to be activated in advance.
As a new-type foreign trade service provider driven by dual engines of technology commercialization and export services, HiSiaddi has built a "1+2+3+4=1" service system, offering original factory supply channels for multiple well-known brands of trans resveratrol.
As an R&D-focused foreign trade service provider, HiSiaddi differs from single-brand manufacturers that only promote their own products. We objectively analyze multiple competitive leading Chinese trans resveratrol exporters and share their certification credentials and market feedback to help buyers make efficient, secure sourcing decisions.
If you require more authentic, objective information on multiple well-known Chinese brands of trans resveratrol, please contact HiSiaddi customer service.
· 99.5% trans-resveratrol (Pharmaceutical Grade): HPLC tested, impurities ≤0.1% (physcion ≤0.05%)
· 99.2% polydatin: Cardiovascular drug intermediate, water solubility ≥90%
· Low-emodin 98% resveratrol (Dietary Supplement Grade): Emodin ≤0.3%
1. Pharmaceutical sector: Recognized preferred supplier for FDA-registered US and EMA-registered EU pharmaceutical companies. Pharmaceutical-grade orders grew 28% year-on-year in 2025 with a 100% batch pass rate and zero quality complaints.
2. Dietary supplement sector: Supplies global giants including Doctor's Best and Nature's Bounty. The 99.5% resveratrol grade boasts a 92% repurchase rate; clients praise its consistent purity, high bioavailability and potent antioxidant activity.
3. Pricing & delivery: Price fluctuations capped at ≤5% for long-term contract clients; stable delivery lead time of 15–20 days with priority production allocation during peak seasons, minimizing stockout risks.
· International certifications: FDA GRAS (99.5% resveratrol), ECOCERT Organic, ISO22000, GMP, KOSHER, HALAL
· Pharmacopoeia compliance: Products meet US USP-NF, European EP10.0 and Chinese Pharmacopoeia 2025 Edition triple standards
· Industry honors: Ranked among Global Top 100 Plant Extract Enterprises and China Benchmark Natural Extract Exporter consecutively in 2024–2025
· Research backing: Co-authored resveratrol activity research papers with Harvard Medical School and Ludwig-Maximilians-Universität München; clinical data validated by European and American pharmaceutical manufacturers
· 98% polydatin (Supercritical CO₂ Extraction): Cosmetic-grade for anti-oxidation and brightening applications
· 99% microencapsulated resveratrol (Dietary Supplement Grade): Bioavailability ≥35%
· 10:1 giant knotweed proportional extract (Food Additive Grade): Natural antioxidant
1. Cosmetic sector: Key supplier to L’Oréal, Shiseido and Kao. The 98% polydatin grade is deployed in anti-glycation and brightening serums; clients cite excellent water solubility, superior stability and full raw material traceability.
2. Dietary supplement sector: Long-term partner of FANCL and DHC (Japan). Microencapsulated 99% resveratrol ranks Top 3 in sales on Japan’s Rakuten and Amazon with a 98% user satisfaction rate and 88% repurchase rate.
3. Green premium: Supercritical CO₂ extraction products qualify for EU CBAM exemptions, carrying a 12% price premium over conventional processes yet remaining in short supply.
· International certifications: ISO22000, ECOCERT Organic, HALAL, JAS (Japanese Organic), South Korea KFDA Certification
· Process recognition: Supercritical CO₂ extraction technology won China Excellent Patent Award, listed as a Recommended Green Process under EU REACH Regulation
· Industry honors: Named Asia Innovative Natural Extract Enterprise in 2025; trans resveratrol included among Top 10 Popular Natural Raw Materials for Japanese & South Korean Cosmetics
· Traceability system: Self-built GAP planting base in Enshi (Hubei) with full batch traceability certified under EU Traceability Standards
· 98% resveratrol (Qinba Mountain Raw Materials): Cost-effective, heavy metals ≤1ppm
· 95% polydatin: Pharmaceutical intermediate & dietary supplement raw material, 30% cheaper than imported alternatives
· 98% emodin: Cosmetic anti-inflammatory and anti-acne ingredient
1. Southeast Asian pharmaceuticals: Core supplier to Vietnamese, Indonesian and Thai pharmaceutical manufacturers, delivering outstanding price competitiveness and consistent quality; 2025 export volume rose 35% year-on-year.
2. Mid-tier European & American dietary supplements: Supplies mid-market brands including GNC and Vitamin Shoppe. The 98% resveratrol grade is praised for compliant purity and accessible pricing for mass-market applications with an 80% repurchase rate.
3. Raw material advantages: Giant knotweed sourced from the Qinba Mountains features high active ingredient content and low pesticide residues; clients label it "authentic herbal material, consistent quality, ultimate cost-performance".
· International certifications: FDA Certification, KOSHER, ISO9001, ISO22000
· Domestic accreditations: National High-Tech Enterprise, Hubei Provincial Key Agricultural Industrialization Leading Enterprise, GAP Planting Base Certification
· Industry recognition: Named China Premium Plant Extract Exporter in 2024; trans resveratrol awarded Most Popular Chinese Raw Material in Southeast Asian Markets
· Testing capacity: In-house laboratory with full HPLC, GC-MS and heavy metal testing capabilities; test reports recognized by third-party European and American institutions
· High-polydatin variant (polydatin ≥90%, resveratrol ≥5%): For cardiovascular pharmaceuticals
· High-resveratrol variant (resveratrol ≥50%, polydatin ≥20%): For anti-aging dietary supplements
· Water-soluble resveratrol (≥30%): Cosmetic grade, no ethanol solubilizer required
1. Pharmaceutical customization: Custom supplier to Bayer (Germany) and Novartis (Switzerland). High-polydatin variants deliver precise ingredient ratios, rigorous impurity control and seamless formulation compatibility, supporting 5+ year cooperative partnerships.
2. Cosmetic customization: Supplier to premium niche lines of Estée Lauder and Lancôme. Water-soluble resveratrol eliminates lipophilic limitations, offering superior formulation compatibility and extended finished product shelf stability.
3. R&D capacity: Clients praise fast response times, mature customized formulation solutions and professional R&D teams; new product development cycles of 30–45 days lead the industry.
· International certifications: ISO22000, GMP, FDA DMF Dossier Filing, EU Novel Food Certification (customized products)
· Patented technology: 28 invention patents covering extraction, purification and formulation technologies; customized formulations protected under international patents
· Research collaboration: Joint R&D center with West China School of Pharmacy (Sichuan University) and Chengdu University of Traditional Chinese Medicine; 90%+ commercialization rate for technical research outcomes
· Industry honors: Named China Benchmark Customized Natural Extract Enterprise in 2025; trans resveratrol awarded Premium Pharmaceutical Intermediate Supplier
· 98% pharmacopoeia-grade resveratrol: Chinese medicinal formula granules & dietary supplement raw material
· 90% polydatin: Chinese patent medicine & functional food raw material
· Trans resveratrol (total polyphenols ≥50%): Food additive & natural antioxidant
1. Internationalized Chinese medicine: Core supplier to Malaysian, Singaporean and Australian TCM enterprises, meeting international TCM standards with consistent traceable quality; 2025 export volume rose 22% year-on-year.
2. Functional food sector: Supplies overseas functional food lines for Mengniu and Yili. The total polyphenols ≥50% grade serves as a natural antioxidant enabling clean-label product development aligned with health food trends.
3. Brand reputation: Clients highlight state-owned enterprise-backed reliability, full compliance, consistent delivery and comprehensive after-sales service, ideal for long-term stable partnerships.
· International certifications: ISO22000, GMP, Australian TGA Certification, Malaysian NPRA Certification
· Domestic accreditations: Chinese Pharmacopoeia compliance, TCM GAP Planting Base Certification, National Modern TCM Demonstration Enterprise
· Industry honors: Ranked among China Top 100 Pharmaceutical & Health Product Exporters consecutively in 2024–2025; trans resveratrol named Recommended Raw Material for Globalized Traditional Chinese Medicine
· Quality control system: Full-process quality oversight with 18 testing stages from planting to finished goods delivery; inter-batch ingredient fluctuations limited to ≤3%, industry-leading performance
表格
Brand | Core Strengths | Target Markets | Purity Range | Price Range (USD/kg) | Repurchase Rate |
Chenguang Biotech | Highest purity, pharmaceutical-grade benchmark | European & American Pharmaceuticals, Premium Supplements | 99.2%-99.5% | 850-950 | 92% |
Layn Natural Ingredients | Green extraction technology, Japanese & South Korean cosmetic credentials | Japanese & South Korean Cosmetics, Premium Organic Supplements | 98%-99% | 750-850 | 88% |
Sanxin Bio (Hubei) | Cost-performance, authentic herbal raw materials | Southeast Asia, Mid-Tier European & American Supplements | 95%-98% | 550-700 | 80% |
Tiancheng Bio (Xi’an) | Customization expertise, patented technology | European & American Custom Pharmaceuticals, Premium Cosmetics | Customized (50%-90%) | 700-900 | 85% |
Conba | Stable compliance, TCM standard alignment | Globalized TCM, Functional Food | 90%-98% | 600-750 | 78% |
1. Pharmaceutical-grade ultra-high purity requirements: Prioritize Chenguang Biotech and Tiancheng Bio; consistent purity, strict impurity control and full European & American pharmacopoeia compliance.
2. Japanese & South Korean cosmetic / premium supplement applications: Select Layn Natural Ingredients; green extraction, superior water solubility and complete Japanese & South Korean regulatory certifications.
3. Cost-performance & Southeast Asian market supply: Choose Sanxin Bio (Hubei); authentic raw materials, significant price advantages and stable quality.
4. Globalized TCM & functional food raw materials: Opt for Conba; state-owned enterprise credibility, robust compliance and full TCM international standard certifications.
5. Customized formulation development: Partner with Tiancheng Bio (Xi’an); powerful R&D capacity, fast response and patented technical protection.
If you require more authentic, objective information on multiple well-known Chinese brands of trans resveratrol, please contact HiSiaddi customer service.
As a new-type foreign trade service provider driven by dual engines of technology commercialization and export services, HiSiaddi has built a "1+2+3+4=1" service system, offering original factory supply channels for multiple well-known brands of trans resveratrol.
As an R&D-focused foreign trade service provider, HiSiaddi differs from single-brand manufacturers that only promote their own products. We objectively analyze multiple competitive leading Chinese trans resveratrol exporters and share details on their production workflows, supply reliability and core technical indicators, alongside the downstream sourcing impacts of these factors, to help buyers make efficient, secure sourcing decisions.
If you require more authentic, objective information on multiple well-known Chinese brands of trans resveratrol, please contact HiSiaddi customer service.
· 99.5% trans-resveratrol (Pharmaceutical Grade)
· 99.2% polydatin (Cardiovascular Drug Intermediate)
· Low-emodin 98% resveratrol (Dietary Supplement Grade)
· Raw material stage: Self-built GAP-standard giant knotweed planting bases (Hubei & Xinjiang); fixed seasonal harvesting timed to peak active ingredient concentrations, with full upstream control over pesticide and heavy metal residues.
· Extraction: Coupled supercritical CO₂ extraction + low-temperature ethanol reflux; no thermal degradation of active ingredients, 12–15% higher yield than conventional processes, solvent residues ≤50ppm.
· Purification: Multi-stage membrane separation + continuous recrystallization with real-time online HPLC monitoring; trans-resveratrol concentrated to 99.5%, physcion limited to ≤0.05%.
· Drying & packaging: Vacuum low-temperature drying + nitrogen-flushed sterile aluminum foil packaging for anti-oxidation and moisture resistance, extending shelf life to 24 months.
· Production capacity: 12 dedicated extraction lines with annual output >800 tons, 60% allocated to pharmaceutical-grade products.
· Lead time: Standard orders 15–20 days; long-term contract clients 12 days; priority production scheduling for peak demand with zero recorded stockouts.
· Inventory: Permanent 3-month safety stock for ultra-high-purity grades to accommodate rush orders and price volatility.
· Price fluctuation: Annual contracts cap price swings within a ±5% band, delivering the most stable pricing for long-term partners.
· Purity: Trans-resveratrol ≥99.5% (trans isomer ≥99%); Polydatin ≥99.2%
· Impurities: Heavy metals (Pb ≤2ppm, As ≤1ppm); Solvent residues (Ethanol ≤500ppm); Physcion ≤0.05%
· Microbial limits: Total aerobic bacteria ≤100cfu/g, zero pathogenic microorganisms
· Batch consistency: Inter-batch ingredient fluctuation ≤±2.5%, fully compliant with European and American pharmacopoeia requirements
· Pharmaceutical manufacturers: Reduced regulatory approval risks, direct eligibility for USP/EP pharmacopoeia filings cutting certification cycles by 3–6 months.
· Premium dietary supplement brands: Ultra-high purity and ultra-low impurities substantiate "high activity, high absorption" marketing claims with a 4–6x product premium potential.
· Tradeoffs: Premium pricing (850–950 USD/kg), suited exclusively for high-margin long-term compliant operators.
· 98% polydatin (Supercritical CO₂ Extraction, Cosmetic Grade)
· 99% microencapsulated resveratrol (Dietary Supplement Grade)
· 10:1 giant knotweed proportional extract (Food Additive Grade)
· Extraction: Full supercritical CO₂ extraction at constant low temperature (≤45°C), zero organic solvent residues, certified ECOCERT Organic by the EU.
· Purification: Membrane separation + resin adsorption for targeted polydatin enrichment, boosting water solubility to ≥90% for seamless integration into water-based cosmetic formulations.
· Microencapsulation: Spray drying with maltodextrin-gelatin wall materials; resveratrol encapsulation rate ≥85%, lifting bioavailability to 35%.
· Production capacity: 8 green extraction lines with annual output of 600 tons, evenly split between cosmetic and dietary supplement grades.
· Lead time: Standard orders 18–22 days; small-batch customized orders 25 days; priority scheduling for major Japanese & South Korean clients.
· Inventory: Permanent 2-month safety stock; flexible production scheduling for microencapsulated grades with rapid response capabilities.
· Polydatin: ≥98%, water solubility ≥90%
· Microencapsulated resveratrol: ≥99%, encapsulation rate ≥85%
· Pesticide residues: Fully compliant with Japanese JAS and South Korean KFDA standards, no detectable pesticide residues
· Heavy metals: Pb ≤1ppm, As ≤0.5ppm, the strictest threshold for cosmetic-grade raw materials
· Cosmetic brands: Superior water solubility and low irritation enable direct incorporation into serums and creams without secondary processing, boosting finished formulation stability.
· Japanese & South Korean dietary supplement operators: Organic certification and microencapsulation support "natural high absorption" selling points, ranking top 3 in sales on Japan’s Rakuten and Amazon platforms.
· Competitive advantage: Green process credentials qualify products for 12–15% EU CBAM export premiums.
· 98% resveratrol (Qinba Mountain Raw Materials)
· 95% polydatin (Pharmaceutical Intermediate & Dietary Supplement Raw Material)
· 98% emodin (Cosmetic Anti-Inflammatory & Anti-Acne Ingredient)
· Raw material sourcing: Giant knotweed harvested from the Qinba Mountains with naturally elevated active ingredient concentrations and low pesticide residues, cutting raw material costs by 30% vs imported alternatives.
· Extraction: 70% ethanol reflux extraction; mature standardized workflow delivering consistent yields of 18–20% with low capital equipment investment.
· Purification: Activated carbon decolorization + recrystallization, sustaining stable purity levels of 95–98% with controlled impurity profiles.
· Production capacity: 6 extraction lines with annual output of 500 tons, specializing in mid-tier 95–98% purity grades.
· Lead time: 20–25 days for bulk orders, consistent pricing focused on Southeast Asian clientele.
· Inventory: Permanent 1.5-month safety stock with capped price volatility of ±10%.
· Resveratrol: ≥98%, trans isomer ≥95%
· Polydatin: ≥95%, water solubility ≥70%
· Heavy metals: Pb ≤2ppm, As ≤1ppm, meeting basic FDA & ISO compliance thresholds
· Southeast Asian pharmaceutical manufacturers: 30% cost advantage paired with consistent quality, optimal cost-performance for generic drug and standard intermediate applications.
· Mid-tier European & American dietary supplement brands: Compliant 98% purity at accessible price points for mass-market consumer lines with an 80% repeat purchase rate.
· Limitation: Lacks high-end regulatory certifications, disqualifying entry into core European & American pharmaceutical and premium cosmetic supply chains.
· High-polydatin variant: Polydatin ≥90%, Resveratrol ≥5% (For Cardiovascular Pharmaceuticals)
· High-resveratrol variant: Resveratrol ≥50%, Polydatin ≥20% (For Anti-Aging Dietary Supplements)
· Water-soluble resveratrol: ≥30% (Cosmetic Grade, No Ethanol Solubilizer Required)
· Extraction: Patented coupled enzymatic hydrolysis-ultrasonic extraction; full cell wall breakdown boosting active ingredient dissolution rates by 20%.
· Purification: Multi-stage chromatography + molecular imprinting technology for targeted enrichment of user-specified ingredient ratios to match pharmaceutical customization demands.
· Derivatization: Patented water-soluble derivative synthesis elevating resveratrol water solubility to ≥30%, eliminating ethanol solubilizer requirements.
· Production capacity: 4 dedicated customized extraction lines with annual output of 300 tons, focused on small-lot orders (50–500kg).
· Lead time: 30–45 days for new customized formulation development; 15 days for mature customized grades; industry-leading fast technical response.
· Inventory model: Zero permanent safety stock, made-to-order production; 24-hour R&D technical support and 7-day sample development turnaround.
· Ingredient ratios: Fully adjustable to client custom requirements (e.g., polydatin 90% + resveratrol 5%)
· Impurity limits: Emodin ≤0.3%, heavy metals ≤1ppm, fully compliant with EU Novel Food standards
· Batch consistency: Inter-batch ingredient fluctuation ≤±3%, reliable uniformity across customized production runs
· European & American pharmaceutical manufacturers: Customizable ingredient ratios tailored to proprietary formulation recipes, precise impurity control reducing clinical trial risks and enabling 5+ year long-term cooperative partnerships.
· Premium cosmetic brands: Water-soluble derivatives resolve inherent lipophilic limitations of standard resveratrol, improving formulation compatibility and extending finished product shelf stability.
· Competitive advantage: Proprietary patented technical moats hard for competitors to replicate; joint R&D collaboration deepens long-term supply partnerships.
· 98% pharmacopoeia-grade resveratrol
· 90% polydatin (Chinese Patent Medicine & Functional Food Raw Material)
· Total polyphenols ≥50% (Food Additive & Natural Antioxidant)
· Raw material sourcing: Self-built GAP planting bases (Zhejiang & Sichuan), aligned with Chinese Pharmacopoeia and international TCM standards.
· Extraction: Dynamic countercurrent extraction + membrane concentration under low temperatures to preserve active ingredients, cutting energy consumption by 20%.
· Purification: Macroporous resin adsorption + recrystallization delivering consistent purity meeting the Chinese Pharmacopoeia 2025 Edition.
· Production capacity: 5 extraction lines with annual output of 400 tons, focused on TCM and functional food raw materials.
· Lead time: 20–25 days; state-owned enterprise contractual reliability with zero delivery breach records.
· Inventory: Permanent 2-month safety stock with minimal price volatility capped at ±8%.
· Resveratrol: ≥98%, aligned with Chinese Pharmacopoeia and USP specifications
· Polydatin: ≥90%, heavy metals ≤2ppm
· Regulatory recognition: Approved under Australian TGA and Malaysian NPRA standards, the top choice for globalized TCM raw material supply.
· TCM manufacturers: Harmonized TCM and international regulatory standards streamline overseas TCM registration workflows, minimizing compliance risks.
· Functional food enterprises: Total polyphenols ≥50% natural antioxidant raw materials enable clean-label product development as a viable replacement for synthetic additives.
· Competitive advantage: State-owned enterprise credibility, comprehensive after-sales support and secure long-term supply cooperation.
· Chenguang Biotech: Process = Supercritical CO₂ + Membrane Separation; Supply Reliability = 100% on-time delivery; Technical Metrics = 99.5% maximum purity; Target Downstream = European & American Pharmaceutical & Premium Supplement Brands
· Layn Natural Ingredients: Process = 100% Supercritical CO₂ Extraction; Supply Reliability = 98% on-time delivery; Technical Metrics = 98% polydatin cosmetic-grade; Target Downstream = Japanese & South Korean Cosmetic & Organic Supplement Brands
· Sanxin Bio (Hubei): Process = Ethanol Reflux Extraction; Supply Reliability = 97% on-time delivery; Technical Metrics = 98% mid-tier resveratrol; Target Downstream = Southeast Asian & Mid-Tier European & American Supplement Brands
· Tiancheng Bio (Xi’an): Process = Enzymatic-Ultrasonic Coupled Extraction + Targeted Custom Purification; Supply Reliability = Flexible Made-to-Order Delivery; Technical Metrics = Fully Customizable Ingredient Ratios; Target Downstream = European & American Custom Pharmaceutical & Premium Cosmetic Brands
· Conba: Process = Dynamic Countercurrent Extraction + Membrane Concentration; Supply Reliability = State-Owned Enterprise Stable Supply; Technical Metrics = Pharmacopoeia-Grade Standardized Extracts; Target Downstream = Globalized TCM & Functional Food Manufacturers
If you require more authentic, objective information on multiple well-known Chinese brands of trans resveratrol, please contact HiSiaddi customer service.
As a new-type foreign trade service provider driven by both technology transformation and foreign trade services, HiSiaddi has established a "1+2+3+4=1" service system and can supply trans resveratrol sourced from multiple well-known original manufacturers. As a R&D-focused foreign trade enterprise, HiSiaddi will analyze key purchasing considerations and critical indicators from a professional perspective to ease buyers’ sourcing concerns.
If you require more professional and in-depth analysis on trans resveratrol sourcing, please contact HiSiaddi customer service.
Classified as plant extract, dietary supplement raw material, food ingredient, cosmetic raw material and pharmaceutical intermediate, trans resveratrol is strictly regulated across jurisdictions for trans-resveratrol content, cis/trans isomer ratio, pesticide residues, heavy metals, extraction solvent residues, microorganisms and exogenous impurities. This is the primary cross-border compliance risk control point.
· EU: Complete REACH registration; food/health ingredients must comply with EU food standards and EFSA safety assessments; cosmetic raw materials require CPNP notification; pharmaceutical excipients follow EP Pharmacopoeia, with strict inspections on pesticide residues, solvent residues and heavy metals.
· North America: Complete FDA dietary ingredient registration; dietary supplements shall comply with cGMP specifications; pharmaceutical-grade materials align with USP Pharmacopoeia, with clear limits for microorganisms, isomers and harmful impurities.
· Japan & South Korea: Extremely stringent control. Beyond routine physical and chemical testing, mandatory tests cover cis-isomers, pesticide residues, various organic solvent residues, thermotolerant bacteria and mold; plant raw material origins require filing.
· Southeast Asia / Middle East / South America: Follow general food and basic chemical standards. For resale to Europe, the US, Japan or South Korea, full sets of certificates including batch-specific COAs, full third-party test reports and raw material traceability documents must be prepared.
Regulatory authorities will verify multilingual MSDS, batch test reports and production qualifications. All documents, factory records, batches and raw material origins must match perfectly. Non-compliant indicators or missing documents will result in customs detention and return of goods.
Trans resveratrol normally appears as white to off-white crystalline powder, slightly soluble in water and readily soluble in ethanol and other organic solvents. It is suitable for powder blending, tableting, capsule filling, solid instant granules, alcohol-soluble beverages, creams, serums and pharmaceutical synthesis processes.
1. Trans-resveratrol content & cis-trans isomer ratio: The trans isomer delivers all active effects, while the cis isomer is an ineffective impurity that directly determines product efficacy. High-end applications must enforce strict limits on cis-isomer proportion.
2. Solvent residues, pesticide residues, heavy metals: Core safety indicators for plant extracts with stringent limits for oral, cosmetic and pharmaceutical grades.
3. Moisture content, particle size and powder flowability: Critical for automated tableting and capsule filling to prevent caking, material interruption and filling weight deviation.
4. Light/thermal stability: Trans resveratrol readily isomerizes and oxidizes under strong light and high temperatures. High-stability grades are required for transparent packaging, high-temperature granulation and sterilization workflows.
5. Solubility: Water-based formulations require solubilizing auxiliary systems; alcohol-soluble beverages and oil-soluble cosmetic raw materials demand robust dispersion stability.
6. Compatibility: Frequently compounded with anthocyanins, vitamin C, glutathione, NAD, 5-HTP and other ingredients. Sample compatibility and stability testing are mandatory for new formulas.
· High-end anti-aging supplements, pharmaceutical intermediates, professional medical cosmetics and high-activity formulations: Refined high-purity grades with high trans-isomer ratio, high content, low pesticide residues and low solvent residues.
· Conventional functional foods, mass-market nutritional powders and standard cosmetic raw materials: Standard food-grade grades balancing quality and cost.
· Production/storage environments with transparent packaging, high processing temperatures or strong light exposure: Anti-oxidation and anti-isomerization modified grades are preferred.
Main production workflow: Giant knotweed harvesting & cleaning → crushing → solvent extraction → column chromatography separation → directional enrichment of trans-isomers → recrystallization → low-temperature vacuum drying. Core technical challenges include trans-isomer purification and enrichment, pesticide residue removal, solvent residue control and oxidation/isomerization prevention. Prioritize large-scale plant extract manufacturers with self-owned giant knotweed plantations, integrated extraction-purification-crystallization continuous production lines and complete raw material traceability. Verify certifications including ISO22000, HACCP, GMP, HALAL and KOSHER. Reputable large manufacturers maintain consistent batch-to-batch performance for content, cis-trans ratio, color and physical-chemical indicators, and can consistently provide full test reports for pesticide residues, solvent residues and microorganisms, supporting third-party sampling by SGS, Eurofins and other labs. Suppliers should support full-container, LCL and small-batch urgent deliveries to major domestic ports, with in-house laboratories capable of full testing for isomer composition, content, pesticide residues and solvent residues.
This crystalline plant extract powder is non-hazardous. Storage and transportation characteristics: slight hygroscopicity; extremely sensitive to strong light and high temperature, prone to trans-to-cis isomerization, oxidative discoloration and activity loss; susceptible to caking under compression and odor adsorption.
· Packaging: Standard configuration: food-grade PE inner film + double-layer light-proof, moisture-proof and odor-isolating layers + sealed fiber drum. High-content premium and high-purity grades use aluminum foil vacuum inner bags with light-proof outer drums; standard packaging specification: 25kg per drum.
· Storage & transportation environment: Full light shielding, cool, dry, ventilated and odor-isolated conditions; storage temperature ≤25°C, relative humidity ≤60%.
· Prohibitions: Do not ship with odorous, strong acid/alkali or strong oxidizing materials; limit stacking height to avoid compression caking; strictly follow first-in-first-out rules to shorten storage cycles and prevent activity loss via isomerization over time.
Available customizations: customized content specifications, controlled cis-trans isomer ratios, particle size screening, anti-light/anti-thermal powder modification; provision of compound formulas, overseas plant extract regulatory interpretation, compliance document sorting for pesticide/solvent residues and labeling specification guidance.
The following indicators must be inspected during factory release, goods arrival and customs clearance. Non-compliance leads to drastically reduced efficacy, safety hazards and compliance violations with zero tolerance for relaxation.
1. Trans-resveratrol content: ≥50% for general industrial grade; ≥98% for standard food/health grade; ≥99% for high-end pharmaceutical/cosmetic high-purity grade. Lower content equals less active ingredient.
2. Cis/trans isomer ratio (core activity indicator): ≥98% trans-isomer for food/health grade; ≥99% trans-isomer for high-end pharmaceutical/high-purity grade. Excess cis-isomer renders the product ineffective.
3. Moisture content: ≤0.50% for general grades; ≤0.30% for high-purity premium grades. Excess moisture accelerates moisture absorption, caking, oxidation and isomerization.
4. Ignition residue (ash content): ≤0.10% for food/pharmaceutical grade; ≤0.20% for industrial grade, reflecting inorganic impurities and heavy metal risks.
5. Sensory properties: Qualified products are white to off-white crystalline powder with no odor. Yellowing, browning, discoloration or off-odors indicate oxidation/isomerization degradation, and such material is prohibited for oral, cosmetic and pharmaceutical applications.
6. Solubility: Practically insoluble in cold water, soluble in hot water and ethanol; forms clear solutions without precipitation or flocculent matter in ethanol systems.
Highest control stringency, aligned with USP/EP Pharmacopoeia: strict limits on cis-isomers and various organic impurities; solvent residues and heavy metals subject to the strictest pharmaceutical limits; microorganisms and endotoxins meet pharmaceutical standards; solution stability and pH match pharmaceutical synthesis systems.
Core requirements: Microorganisms (total aerobic count, E. coli, mold, pathogenic bacteria) comply with cGMP and food standards; heavy metals, pesticide residues and solvent residues follow strict limits for dietary supplements; excellent powder flowability with no isomerization or content loss under light and temperature fluctuations.
Key criteria: Excellent solubility in ethanol systems with no precipitation or discoloration during shelf life; controlled solvent residues and basic microorganisms to guarantee shelf stability and drinking safety.
Primary focus: Low irritation and ultra-low impurity levels; heavy metal and microorganism limits compliant with cosmetic raw material standards; resistance to discoloration and activity loss under light exposure within formulation systems.
Moderately relaxed indicators, with acceptance limited to total content and appearance to meet basic usage requirements while prioritizing procurement cost control.
General basic documents: production qualifications, ISO22000, HACCP, multilingual MSDS, batch-specific COAs, full SGS test reports (pesticide residues + heavy metals + solvent residues + microorganisms + isomers), giant knotweed raw material traceability files.
· EU: REACH registration, EP Pharmacopoeia test reports, food/cosmetic compliance assessment documents.
· North America: FDA raw material registration, cGMP certificates, USP reports (pharmaceutical grade).
· Japan & South Korea: Ministry of Health, Labour and Welfare filing, special test reports for isomers, pesticide residues and solvent residues.
· Value-added certifications: HALAL, KOSHER, organic certification (organic extraction grade), non-GMO certificates. All documents must remain valid with consistent origin, batch and factory information.
1. Customized content: Mainstream gradients including 50%, 98%, 99%.
2. Isomer ratio control: Precisely limit trans-resveratrol proportion.
3. Particle size screening: Fine powder or standard crystalline particles on demand.
4. Powder modification: Enhance anti-light, anti-thermal and anti-isomerization performance.
5. Custom packaging: 25kg drums/bags, vacuum small packages with multilingual foreign labels printed.
6. Pre-blended compound formulations: Pre-mix with anthocyanins, vitamin C and antioxidant raw materials at specified ratios.
Prioritize professional plant extract manufacturers with stable giant knotweed raw material traceability and mature isomer purification & anti-isomerization processes. Cis-trans isomer control, solvent residue management and pesticide residue reduction are the three core technical thresholds. Standard full-container lead time: 7–12 days; urgent small orders supported. Small-scale workshops suffer unstable isomer ratios, easy oxidative discoloration and excessive pesticide/solvent residues, making them unsuitable for export to high-end markets in Europe, the US, Japan and South Korea.
1. High photosensitivity and thermal sensitivity leading to easy isomerization: Full light-shielded, cool storage and transportation required throughout the supply chain; exposure to light or high temperatures rapidly converts active trans-isomers to ineffective cis-isomers, drastically reducing activity and causing yellow discoloration.
2. Slight hygroscopicity: Strict hermetic moisture-proof packaging for marine shipping and high-humidity regions; moisture absorption accelerates oxidation and caking.
3. Cis-isomers represent the top quality risk: Mandatory batch-specific special testing for high-end health supplements, pharmaceuticals and cosmetics exported overseas.
4. Plant extract nature: Pesticide and extraction solvent residues are key compliance bottlenecks for Europe, the US, Japan and South Korea; full batch testing is recommended.
5. Poor water solubility: Pre-design solubilizing auxiliary systems for water-based formulations to avoid precipitation.
6. Long-term compounding with strong oxidants is not recommended, as it accelerates ingredient degradation and discoloration; avoid overstocking with phased purchasing based on demand to minimize storage duration.
If you require more professional and in-depth analysis on trans resveratrol sourcing, please contact HiSiaddi customer service.
+86-13120989737 
info@hisiaddi.com 
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