China Ginkgo Biloba Online Factories & Exporters

UniCare works with Chinese manufacturers whose quality systems are certified to standards including GMP, EU-GMP, CEP, ISO 9001, ISO 22000 and HACCP. Certification scope varies by product line, and the relevant certificates are shared for each ingredient during supplier qualification.

Each partner factory has independent testing capability. Typical release testing covers marker compound assay by HPLC or UV, residual solvents by GC, pesticide residues by GC-MS/MS, heavy metals (lead, arsenic, mercury, cadmium, copper) by ICP-MS, microscopic and TLC identification, moisture or loss on drying, ash, microbial limits, pH, conductivity and sulfur dioxide residue.

Each lot is supplied with a batch-specific Certificate of Analysis. Specification sheets, MSDS, methods of analysis and regulatory statements can be provided on request during qualification.

Yes. The customized service covers adjustments such as assay level or extract ratio, particle size and packaging format, subject to technical feasibility and regulatory requirements in the destination market.

Buyers can request the product catalog and samples through the Request a Catalog page, by email at [email protected], or by phone at +86-028-85333989.

Ginkgolic acids (alkylphenols) are determined by high-performance liquid chromatography (HPLC) paired with UV detection (typically at 210 nm or 310 nm) or LC-MS/MS for trace levels. In accordance with USP <561> and Ph. Eur. monographs, the total sum of ginkgolic acids (C13:0, C15:1, C17:1) must not exceed 5.0 mg/kg (5 ppm). For specialized pharmaceutical parenteral grades, our advanced resin column separation routinely reduces total alkylphenols to < 1.0 ppm.

Authentic standardized Ginkgo extract contains flavonols bound predominantly as complex glycosides that require controlled acid hydrolysis to liberate quercetin, kaempferol, and isorhamnetin. Unethical suppliers often spike free unhydrolyzed quercetin or Sophora japonica extract. We employ UHPLC chromatographic profiling prior to acid hydrolysis to confirm that free quercetin is negligible (< 1.0%), while verifying that the peak area ratio of quercetin to kaempferol is strictly between 0.8 and 1.2, and isorhamnetin is ≥ 0.15.

Our Ginkgo Biloba extract is manufactured exclusively using USP/EP Class 3 food-grade solvents: purified water and aqueous ethanol. Class 1 and Class 2 solvents (such as methanol, benzene, or chlorinated solvents) are strictly prohibited. Residual ethanol is verified by Headspace Gas Chromatography (GC-FID) and consistently controlled below 3,000 ppm (or < 500 ppm upon formulation request), well within the 5,000 ppm USP limit.

Standard commercial Minimum Order Quantity (MOQ) for standardized Ginkgo Biloba powder is 25 kg (one standard export fiber drum with double inner food-grade pharmaceutical polyethylene bags). For preliminary qualification or formulation bench trials, sample kits (100g to 1kg) are dispatched via DHL/FedEx within 48 hours. Commercial shipments ship within 7 to 14 business days from confirmation of batch reservation.