As an innovative foreign trade service provider driven by both technology commercialization and foreign trade, HiSiaddi has built a service system of "1+2+3+4=1" and can supply original-source products of plant sterols and sterol esters from multiple well-known brands. Equipped with R&D capabilities, HiSiaddi has collaborated with manufacturers on technology conversion and accurately captured market demands, repeatedly solving customized product requirements for plant sterols and sterol esters. Below is a case demonstrating how HiSiaddi addressed customized demands for plant sterols and sterol esters.
For inquiries about customized service solutions, please contact HiSiaddi customer service.
Client: PhytoHealth NV, Belgium A high-end functional food and dietary supplement enterprise based in Belgium, specializing in cardiovascular care tablets, adult lipid-lowering compound nutritional powders, and premium plant-based soft capsules. Its products are supplied to high-end pharmacies, health management centers and organic supermarkets across Western Europe including Belgium, the Netherlands and Luxembourg. The enterprise strictly complies with the European Pharmacopoeia (EP), EU food additive standards, cGMP, REACH, IFS and non-GMO certifications. Focused on the high-end health sector, the client imposes stringent requirements on raw material composition ratios, esterification processes, low-temperature stability, lipophilic/hydrophilic properties and impurity control, positioning itself as a mid-to-high-end client with heavy focus on technology, quality and long shelf-life guarantees.
To develop a new high-absorption cardiovascular care soft capsule, the client required customized compound plant sterols and plant sterol ester raw materials with exclusive technical specifications and production requirements clearly defined as follows:
1. Composition Ratio: Total plant sterol content ≥95%; ratio of β-sitosterol : campesterol : stigmasterol = 65:20:15 with a deviation tolerance of ±1%; esterification rate of plant sterol esters ≥92%.
2. Form & Solubility: Sterol esters in oily form, non-solidified and non-delaminated at 5°C; excellent fluidity at room temperature compatible with oily matrices for soft capsules.
3. Impurity Control: Individual heavy metals (lead, arsenic, mercury, cadmium) ≤0.1ppm; solvent residues ≤5ppm; peroxide value ≤1.0 meq/kg.
4. Sensory & Stability: Odor-free, pale yellow transparent appearance; after 90-day accelerated testing (40°C / 65% RH), attenuation of component ratios and esterification rate ≤1.5%.
5. Production & Delivery: Initial customized batch of 400kg via flexible small-batch production, full delivery within 38 days; full English traceability documents and third-party authoritative test reports provided with full raw material traceability.
The client previously contacted 5 domestic manufacturers, none of which could simultaneously meet the requirements of precise ratio control, non-solidification under low temperature, high esterification rate and small-batch customization. Some manufacturers suffered severe fluctuations in component ratios; others lagged in esterification technology leading to insufficient stability; several factories refused to adjust production processes for small orders, stalling the client’s new product R&D progress. The client entrusted HiSiaddi to deliver a one-stop solution covering process debugging, lab trials, pilot production, mass manufacturing and compliant delivery, alongside guaranteed long-term stable supply.
1.
High Difficulty in Precise Control of Natural Component Ratios Plant sterols are extracted from plant sources such as soybeans and rapeseeds, and natural component ratios are easily affected by raw material origins and batches. Conventional products generally experience ratio fluctuations exceeding ±3%. The client required a deviation tolerance narrowed to ±1%, demanding multi-stage purification and precise blending of raw materials — a capability lacking in standard production lines without refined regulation equipment.
2.
3.
Technical Contradiction Between High Esterification Rate and Low-Temperature Fluidity The esterification process of sterols directly impacts absorption efficiency and physical properties. A high esterification rate tends to raise the freezing point of oils, causing solidification and delamination under low-temperature storage in Europe and disrupting soft capsule filling processes. Simply adjusting esterification conditions to lower the freezing point would conversely reduce esterification rates and fail to meet bioavailability standards, creating a difficult trade-off.
4.
5.
Stringent Oxidation and Component Stability Standards Plant sterols and sterol esters are unsaturated lipids prone to oxidative deterioration and component transformation. The client’s strict 90-day accelerated stability test standards lead to obvious rises in peroxide values and shifts in component proportions for conventional products, which cannot satisfy the 24-month shelf-life requirement.
6.
7.
Conflicts Between Small-Batch Flexible Customization and Process Switching Mainstream domestic production lines are designed for mass production at the ton scale. Adjusting full sets of purification, esterification and blending parameters exclusively for a 400kg small order incurs high process switching costs and complex quality control, resulting in low willingness among most manufacturers to accept such orders.
8.
9.
Complex Full-Chain Compliance Documentation System Western European markets mandate comprehensive raw material traceability records, non-GMO certificates, food additive compliance certifications and multi-batch stability data for raw materials. Document formats and testing methods must align with EU standards, yet most manufacturers lack complete documentation systems, risking failures in client quality audits and customs inspections.
10.
HiSiaddi screened leading domestic manufacturers specializing in advanced plant sterol deep processing with high-end customization capabilities, formed a dedicated technical coordination team, and collaborated with factories to tackle challenges across six key links: raw material selection, purification & blending, esterification processes, stability enhancement, flexible production scheduling and compliance documentation sorting.
A fixed supply chain of non-GMO soybean and rapeseed oil by-products was established for sterol extraction. Every batch of raw materials underwent pre-testing of natural component proportions, eliminating raw materials with excessive component deviations to narrow fluctuation ranges at the source. Multi-stage molecular distillation purification procedures were added to separate miscellaneous sterols and invalid impurities, stabilizing total sterol content above 96% to lay a solid purity foundation.
An automated precision weighing and sealed blending system was deployed for gradient compounding according to the target ratio of 65:20:15. Samples were collected and tested three times during blending, with feeding volumes fine-tuned repeatedly to stabilize ratio deviations within ±0.8%. Blending was conducted in a low-temperature sealed environment to avoid oxidation from air exposure, and all blending parameters were recorded to form standardized operating procedures ensuring cross-batch consistency.
A low-temperature composite fatty acid esterification process replaced traditional high-temperature esterification routes. Specially matched vegetable oil fatty acids were selected as esterification substrates to stabilize esterification rates above 93% while lowering the product freezing point, enabling the oil to remain liquid without solidification or delamination at 5°C. The catalytic system and de-alcoholization process were optimized to completely remove residual alcohols, limiting solvent residues to below 3ppm and meeting EU residual limit requirements.
Food-grade composite antioxidants compliant with regulations were added without altering product color or odor. Finished products were sealed under inert nitrogen to isolate oxygen and moisture. Testing confirmed that after 90 days of accelerated storage at 40°C, peroxide values rose by only 0.3 meq/kg, and attenuation of components and esterification rates fell below 1.2%, fully meeting the client’s standards.
The factory’s dedicated flexible customized production line was prioritized for this order, with independent production zones allocated to avoid cross-contamination and accommodate the 400kg small-batch production requirement. Five testing checkpoints were implemented: raw material acceptance, post-purification, post-esterification, post-blending and finished product warehouse-out. A full-item test report was issued for each batch with key indicators verified item by item to eliminate quality defects.
A full set of English-language documents was compiled in accordance with EU and Belgian regulations: raw material traceability ledgers, non-GMO certificates, EP-standard COAs, IFS/cGMP certificates, stability test reports, and special heavy metal & solvent residue test reports. All documents were delivered alongside goods to eliminate secondary audit work for the client.
HiSiaddi first shipped 6kg trial samples for comprehensive laboratory testing by the client:
· Total plant sterol content: 96.2%; ternary component ratio: 65.1:19.9:15.0 with fully compliant deviations
· Sterol ester esterification rate: 93.5%; after 72-hour static storage at 5°C, oil remained transparent and fluid with no solidification or delamination
· All heavy metal, solvent residue and peroxide value indicators were far below specified limits
· Attenuation of all indicators passed the 90-day accelerated stability test
All sample parameters fully met standards, and the client confirmed product finalization.
Production, filtration, aseptic filling and outer packaging of the 400kg customized product were completed on the 36th day of the project, 2 days ahead of the agreed delivery deadline. Products were packed in food-grade light-proof iron drums sealed with nitrogen to suit ocean transportation. Upon arrival in Belgium, the goods passed customs and client quality inspection in a single review with zero compliance or quality issues.
The customized raw materials were applied to mass production of soft capsules, which achieved outstanding market feedback after launch. The client formally appointed HiSiaddi as its exclusive Chinese supplier for customized plant sterols and sterol esters:
· Fixed monthly orders of 600–800kg were placed, adopting the customized process and standards established in this project
· HiSiaddi was entrusted to develop two additional customized derivative products: water-soluble plant sterol powder and high-purity monomer sterols
· Sourcing of all similar plant functional raw materials was transferred to HiSiaddi, expanding multi-category collaboration between both parties
Customization demands from high-end Western European functional food clients for plant sterols and sterol esters primarily revolve around precise component ratios, balanced processing performance, low-temperature fluidity and long-term stability, compounded by small-batch production and stringent compliance requirements. Standard manufacturers can only supply off-the-shelf products and lack capabilities for refined process debugging and flexible production, making them unable to match high-end customization demands.
Relying on premium supply chain resources, professional process expertise and EU compliance experience, HiSiaddi delivers full-process technical control spanning raw materials to finished goods, resolving all customization barriers and completing high-quality delivery within the agreed timeline. For overseas mid-to-high-end clients prioritizing technology, quality and supply chain stability, comprehensive partners capable of simultaneous customized process development, production implementation and compliance assurance serve as core pillars of their overseas supply chains — this constitutes HiSiaddi’s core competitive advantage in deepening its focus on customized high-end plant extracts and functional raw materials.
For inquiries about customized service solutions, please contact HiSiaddi customer service.
+86-13120989737 
info@hisiaddi.com 
English
