HiSiaddi is an innovative foreign trade service provider driven by dual pillars of technology commercialization and foreign trade services, with a "1+2+3+4=1" service system. It can supply green tea extract (EGCG 90%) from multiple well-known original manufacturers.
As a foreign trader with R&D capabilities, HiSiaddi has repeatedly proposed AAA product formula optimization schemes and application improvement suggestions through technological cooperation with manufacturers and accurate grasp of market demands. Below is a consultation case on formula optimization for green tea extract (EGCG 90%).
For inquiries about more formula optimization consultation services, please contact HiSiaddi customer service.
Client: SwissPharma Nature, a well-known mid-to-high-end natural health brand in Europe. Its products are sold at high-end pharmacies and private health institutions across Central Europe including Switzerland, Germany and Austria, specializing in high-activity oral antioxidant capsules and concentrated herbal oral liquids. All product lines comply with strict EU EFSA, cGMP and Swiss standards for food raw materials. The brand has long purchased green tea extract with EGCG ≥90% for two high-end product lines: solid capsules and liquid oral liquids. Months after mass production of raw materials, frequent abnormalities occurred on production lines, with substandard finished product stability, taste and feeding performance. The internal R&D team failed to fundamentally solve the problems after repeated adjustments to formulas and production parameters, delaying the new product iteration plan. The client then entrusted HiSiaddi to conduct technical diagnosis and deliver a full set of implementable solutions.
High-purity EGCG powder has a large specific surface area and strong hygroscopicity. Raw materials easily agglomerate and generate static electricity in the client’s normal-temperature production workshop, blocking fully automatic feeding pipelines and causing frequent equipment shutdowns. Meanwhile, uneven powder mixing leads to excessive variation of active ingredient content in single capsules, failing to meet the quality control requirements of premium products.
After blending the extract into oral liquid, the system pH value is close to neutral. Coupled with light and storage environment impacts, EGCG rapidly oxidizes and isomerizes. Activity declines by over 12% after 1 month of ambient storage, accompanied by solution turbidity and deepened color, far failing to meet the brand’s 12-month shelf life standard.
The oral liquid adopts 80°C pasteurization, and capsules use a 68°C drying granulation process. These two high-temperature procedures cause up to 9% EGCG loss. Meanwhile, the inherent bitter-astringent taste of raw materials is amplified, damaging the original flavor of beverages and downgrading the sensory quality of end products.
EGCG contains abundant phenolic hydroxyl groups, which undergo complexation reactions with trace metal ions and some thickening auxiliary materials in the formula. This not only accelerates component degradation but also generates fine floccules, further destroying the uniformity of liquid product systems.
Caffeine content varies greatly across batches of raw materials, with some batches exceeding the brand’s internal control limits and failing to match the brand positioning of "low-caffeine premium health care".
HiSiaddi collaborated with the technical team of partner manufacturers to trace the root causes one by one by combining raw material test reports, client production working conditions and complete formula systems:
1. Raw materials only underwent basic drying without powder modification, with high moisture and surface active substances, the primary cause of moisture absorption, static electricity and caking.
2. EGCG is extremely chemically unstable in neutral environments. Conventional raw materials lack pH adaptation and molecular stabilization treatment, and light, oxygen, acid and alkali environments all accelerate decomposition.
3. EGCG has low temperature tolerance, and the existing production process involves excessively long high-temperature exposure; without debittering treatment, high temperatures accelerate the release of bitter substances.
4. Raw materials lack ion passivation treatment, making phenolic hydroxyl groups prone to react with auxiliary materials and metal ions precipitated from equipment.
5. Conventional EGCG extracts lack targeted caffeine removal processes, and traditional extraction technology cannot stably control caffeine content.
A low-temperature fluidized bed granulation and air classification process was adopted to optimize powder particle size distribution and eliminate static electricity. Food-grade anti-caking components permitted by regulations were added, followed by secondary vacuum drying to strictly control raw material moisture below 2.8%. The packaging scheme was optimized with double-layer aluminum foil vacuum bags equipped with built-in desiccants to adapt to temporary workshop storage and warehouse environments. After rectification, powder looseness met standards, automatic feeding operated continuously without jams, and capsule filling variation remained within compliance limits.
A formula pH adjustment scheme was provided, adopting a citric acid-sodium citrate buffer system to stabilize the oral liquid system at pH 3.0–4.5, significantly delaying EGCG degradation. Raw materials were modified via cyclodextrin molecular embedding to form a protective layer outside EGCG molecules and isolate light and oxygen erosion. Meanwhile, approximately 0.2% vitamin C was recommended for compounding in the formula for synergistic anti-oxidation. Testing verified that after 12 months of ambient storage of finished products, EGCG activity retention exceeded 95%, with clear solutions free of discoloration and turbidity.
Assisted the client in adjusting production parameters: oral liquid sterilization was changed to short-term segmented temperature control mode, and capsule drying adopted gradient heating to shorten high-temperature contact duration. After process transformation, EGCG high-temperature loss was reduced to below 2%. Room-temperature physical taste masking technology was applied to adsorb bitter substances without destroying the structure of active ingredients. Natural flavor auxiliary materials were matched to adjust formula ratios, completely eliminating the bitter taste of finished products and meeting the sensory requirements of premium products.
Special ion passivation treatment was performed on EGCG raw materials to reduce the complexation activity of phenolic hydroxyl groups. Meanwhile, the client’s existing auxiliary material list was sorted out, and recommendations were made to replace additives prone to adverse reactions. Dual optimization eliminated floccules in the system and greatly improved overall formula compatibility.
Extraction and purification procedures were adjusted with an additional resin segmented elution link to directionally separate and remove caffeine, stabilizing its content within the brand’s required range. A special caffeine test report was provided for each batch to realize controllable indicators.
HiSiaddi compiled raw material storage standards and workshop temperature & humidity control requirements (temperature: 20–24°C, humidity: 30%–40%), guiding the client to use raw materials immediately after opening and minimize open storage time. Technical staff arranged remote follow-up of multiple rounds of trial production debugging to ensure full implementation of the solutions.
HiSiaddi sent rectified samples, and the client completed laboratory testing, small trials and pilot production. All technical problems were fully resolved, with all indicators meeting EU and brand internal control standards.
Subsequent bulk raw materials were put into formal production, with stable operation of both production lines. The quality of end capsules and oral liquids fully met expectations, enabling smooth iteration and launch of new products.
The client highly recognized HiSiaddi’s technical diagnosis and delivery service capabilities, designating HiSiaddi as the core supplier for EGCG series raw materials. New demands such as sustained-release EGCG and compound polyphenol raw materials were raised later, continuously expanding cooperative product categories.
For high-end dietary supplements, the requirements for EGCG 90% green tea extract go far beyond simple content indicators; production adaptability, formula compatibility, long-term stability and sensory experience all serve as core assessment criteria. Conventional standardized raw materials and single manufacturers usually only focus on products themselves and lack technical service capabilities for downstream application ends.
Supported by professional plant extract technology, application formula experience and in-depth understanding of overseas production specifications, HiSiaddi resolves full-chain technical challenges through raw material modification, formula optimization and process adjustment. It not only helps clients resolve production crises but also lays a solid foundation for long-term cooperation, which constitutes the core competitiveness of foreign trade service providers serving overseas mid-to-high-end clients.
For inquiries about more formula optimization consultation services, please contact HiSiaddi customer service.
+86-13120989737 
info@hisiaddi.com 
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