As a new-type foreign trade service provider driven by technological transformation and export business, HiSiaddi has built a "1+2+3+4=1" service system and can supply wild yam extract and diosgenin sourced from multiple well-known original manufacturers. Boasting R&D capabilities in technological transformation, HiSiaddi has collaborated with factories on technical conversion and accurately captured market demands, repeatedly resolving customized production requirements for wild yam extract and diosgenin. Below is a case study of HiSiaddi delivering customized solutions for wild yam extract and diosgenin.
Contact HiSiaddi customer service for more customized service inquiries.
Purchaser: PharmaNatural Inc., California, USA. A mid-to-high-end pharmaceutical brand specializing in menopausal functional dietary supplements and steroidal pharmaceutical intermediates across North America. Its products are sold in premium US chain pharmacies, private endocrinology clinics and North American organic supermarkets, with an in-house formulation R&D laboratory. Diosgenin is used for high-end menopausal soft capsules and steroidal API intermediates, complying with USP (United States Pharmacopeia), FDA 21CFR111 dietary GMP, FSMA pesticide residue control and GRAS raw material safety standards.
Client Customization Requirements: Wild yam-derived diosgenin with a high purity specification of 98.5%±0.3%, customized ultrafine 200-mesh powder, low residual solvents and low heavy metals. Raw materials are strictly limited to wild Dioscorea zingiberensis (yellow ginger) from the Qinba Mountains in Shaanxi Province; artificially cultivated yams are prohibited as feedstock. Annual fixed customized procurement volume: 22 tons.
The client previously contacted 3 domestic plant extract manufacturers independently, yet all failed to meet the customized indicators, resulting in five major issues: fluctuating purity, adulteration of cultivated yams in raw materials, substandard powder particle size, excessive organic solvent residues and unstable mass production processes. Six consecutive batches of samples failed testing at a US third-party laboratory, halting the launch of new products. The client entrusted HiSiaddi to fully undertake the whole-process customized delivery via foreign trade services.
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Unregulated raw material sourcing with adulterated cultivated yams leading to insufficient active ingredients To cut costs, most factories mix low-cost artificially cultivated Chinese yams with wild Dioscorea zingiberensis as feedstock. Cultivated yams only contain around 3% endogenous diosgenin, while wild Dioscorea zingiberensis can reach over 13%. Mixed raw materials cause drastic fluctuations in finished diosgenin purity (95%~97.2%), failing to hit the client’s internal control standard of a fixed 98.5%, accompanied by excessive impurity peaks in HPLC test chromatograms.
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Outdated purification processes unable to achieve refined customization for narrow-range purity control Conventional manufacturers adopt traditional single acid hydrolysis processes without sophisticated chromatographic purification equipment, only capable of mass-producing general national standard grade products of 95% purity. They cannot realize narrow-range content control at 98.5%, with crude recrystallization management that fails to eliminate byproducts.
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Lack of customized powder particle size capacity, disrupting terminal formulation filling The client’s fully automatic soft capsule filling line requires 200-mesh ultrafine powder, while finished products from original factories are mostly coarse powder of 80~100 mesh with poor powder flowability, causing filling weight deviation exceeding 5% and incompatibility with high-end formulation production lines.
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Excessive solvent and heavy metal residues failing FDA import access standards Traditional processes leave high ethanol and acetone residues, with lead, arsenic and cadmium heavy metal levels exceeding USP pharmacopoeia limits. Factories lack closed impurity removal processes, failing to meet toxicological safety requirements for US customs clearance.
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HiSiaddi conducted on-site screening of 2 cooperatives with GAP wild Dioscorea zingiberensis harvesting qualifications in the Qinba Mountains of Shaanxi Province and signed exclusive targeted harvesting agreements: wild Dioscorea zingiberensis can only be harvested in autumn, with official forestry harvesting certificates, traceability ledgers and pre-inspection pesticide residue reports attached to each batch. Mixing of artificially cultivated yams is fully prohibited. Raw materials undergo HPLC pre-screening upon arrival; entire batches with tuber saponin base content below 12% are rejected, locking raw material quality from the source.
HiSiaddi partnered with compliant factories equipped with SMB simulated moving bed chromatographic purification and enzymatic pretreatment production lines, abandoning the traditional strong acid full hydrolysis process. A customized process combining enzymatic pretreatment, low-temperature biphasic hydrolysis, multi-stage recrystallization and refined chromatographic purification was adopted: ① Cellulase wall breaking at room temperature improves saponin conversion rate and reduces strong acid byproduct generation; ② Segmented temperature-controlled hydrolysis precisely regulates hydrolysis duration and acid-base ratio; ③ Chromatographic grading removes impurities, stabilizing diosgenin within the 98.2%~98.8% range to satisfy the mandatory customization index of 98.5%±0.3%.
A customized low-temperature jet milling and multi-stage grading sieving production line was deployed, with all finished products passing through a 200-mesh sieve. Powder bulk density is controlled at 0.42~0.45g/ml to optimize flowability for the client’s automatic soft capsule filling equipment and resolve filling measurement deviation issues. Drying temperature is strictly capped at ≤55℃ to avoid thermal degradation of active ingredients.
1. Closed-loop organic solvent recovery throughout production, with ethanol residue controlled below 500ppm, far lower than USP limit standards;
2. Each finished batch undergoes full USP-compliant testing at an ILAC-accredited international laboratory for heavy metals, microorganisms, 226 pesticide residues and solvent residues, with bilingual Chinese-English COA issued;
3. Assist factories in completing FDA-GMP production batch records and supporting raw material traceability files to comply with the US FSMA Import Traceability Act.
After 3 rounds of small-batch trials and 2 rounds of pilot production, 5 batches of samples all passed testing at SGS USA, with stable purity ranging from 98.3% to 98.7%, 200-mesh particle size and fully compliant solvent & heavy metal indicators. The first shipment of 6.5 tons of customized products was vacuum-packed in pharmaceutical-grade aluminum foil and shipped from Shanghai Port to Los Angeles, clearing US customs without warnings or inspections for smooth warehousing. After raw material deployment, the client’s soft capsule filling error was controlled within ±1.8%, and finished terminal products were successfully launched in premium US pharmacies.
A yearly locked-price customized framework for 22 tons was signed between both parties, split into 8 monthly production batches. The following year, the client added a customized low-irritation cosmetic-grade 95% diosgenin line, fully entrusting HiSiaddi to coordinate customized production and export.
Most small and medium-sized domestic plant extract manufacturers focus on off-the-shelf general specifications and lack refined customized R&D capabilities. Restricted by raw material procurement and production line equipment, they struggle to meet non-standard customized indicators required by mid-to-high-end European and American pharmaceutical enterprises. Leveraging upstream raw material resources and partnerships with top compliant factories, HiSiaddi delivers end-to-end customized solutions covering raw material sourcing, extraction processes, post-processing powder treatment and export compliance, breaking customization barriers for high-purity domestic diosgenin to enter the mid-to-high-end North American pharmaceutical and dietary supply chain.
Contact HiSiaddi customer service for more customized service inquiries.
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