Standardized Ginkgo Biloba (Ginkgo biloba) Leaf Extract meeting EGb 761 specification (Flavonol Glycosides 24% / Terpene Lactones 6%). Sourced through qualified production partners for dietary supplement manufacturers.
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Per GB-001 (Verified 2026-09-20):
| Specification Level | Active Marker |
|---|---|
| Ginkgo Biloba Extract EGb 761 (Flavonol Glycosides 24% / Terpene Lactones 6%) | HPLC |
| Ginkgo Biloba Extract Premium (Flavonol Glycosides 26% / Terpene Lactones 7%) | HPLC |
| Water-Soluble Ginkgo Biloba Extract (5:1 Concentration) | HPLC |
Specifications subject to product requirements and destination-market regulations.
| Botanical source | Ginkgo biloba (ginkgo leaf) |
| Part used | Leaf |
| Active marker | Flavonol Glycosides (quercetin, kaempferol, isorhamnetin glycosides) and Terpene Lactones (ginkgolides A,B,C,J + bilobalide) |
| Form | Brown to yellowish-brown fine powder |
| CAS No. | 90045-36-6 (Ginkgo biloba extract) |
| Ginkgolic Acid | ≤ 5 ppm (Ph. Eur. limit) |
| Test Item | Specification | Method |
|---|---|---|
| Appearance | Brown to yellowish-brown fine powder | Visual |
| Odor & Taste | Characteristic, slightly bitter | Organoleptic |
| Flavonol Glycosides | ≥ 24.0% | HPLC (Ph. Eur.) |
| Terpene Lactones | ≥ 6.0% | HPLC (Ph. Eur.) |
| Ginkgolic Acid | ≤ 5 ppm | HPLC (Ph. Eur.) |
| Loss on Drying | ≤ 5.0% | USP <731> |
| Heavy Metals (Pb/As/Cd/Hg) | ≤ 3/1/1/0.1 ppm | ICP-MS |
| Total Plate Count | ≤ 1,000 CFU/g | USP <2021> |
| Yeast & Mold | ≤ 100 CFU/g | USP <2021> |
| E. coli / Salmonella | Negative | USP <2022> |
All specifications subject to product specification and destination-market requirements.
EGb 761 is the original German Schwabe specification for Ginkgo Biloba Extract: ≥ 24% Flavonol Glycosides and ≥ 6% Terpene Lactones, with ≤ 5 ppm Ginkgolic Acid. It is considered the gold standard for pharmaceutical-grade Ginkgo.
Ginkgolic Acid is a phenolic acid found in ginkgo leaves. It is limited to ≤ 5 ppm due to potential allergenicity and toxicity concerns. Ph. Eur. requires this limit for safety.
The 26%/7% Premium grade has higher Flavonol Glycosides (26% vs 24%) and Terpene Lactones (7% vs 6%) content. It is positioned for premium applications while maintaining EGb 761 quality parameters.
Ginkgo Biloba Extract is permitted as a traditional herbal medicinal product in the EU under Directive 2004/24/EC. EGb 761 specification is recognized in pharmaceutical monographs.
Flavonol Glycosides content is quantified via HPLC per Ph. Eur. method, with individual quantification of quercetin, kaempferol, and isorhamnetin glycosides.
Standard MOQ is 25 kg. Smaller quantities (5-10 kg) are available for evaluation.
Yes. Custom specifications (e.g., specific Flavonol Glycosides content, water-soluble form, packaging) can be discussed with our coordination team.
Standard documentation includes COA, MSDS, allergen statement, Non-GMO statement. Additional documentation available upon request from production partners.
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Data marked as "typical" reflects industry standards; specific values vary by supplier and batch. Documentation including COA, MSDS, allergen, and Non-GMO documentation is available upon request from production partners.
About Nourish Ingredients: We are a China-based sourcing partner for botanical extracts and nutraceutical ingredients. We coordinate supply for international brands — from specification matching to delivery. Production partners maintain FSSC 22000, BRCGS, EU Organic, USDA Organic, FAMI-QS certifications. Documentation available upon request.
For ingredient sourcing inquiries: ashely@nourishingr.com
Reviewed by: Nourish Ingredients Editorial Team Version: 2.3 Last updated: 2026-09-20
| Product Name | Ginkgo Biloba Extract (Total Flavonol Glycosides 24%, Terpene Lactones 6%) |
|---|---|
| Latin Name | Ginkgo biloba |
| Main Specs | Flavonol Glycosides 24% / Terpene Lactones 6% (EGb 761) |
Industry-standard testing indicators. Values vary by specification grade.
Specification and COA available on request.
Application and formulation guidance available on request.
