Ginkgo biloba (leaf)

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Ginkgo (leaf extract) (Ginkgo biloba) standardized to flavonol glycosides and terpenes. 

General Characteristics AHPA recommends in its Known Adulterants list that appropriate steps be taken to assure that this raw material is free of the noted adulterant. Contact AHPA for additional information regarding relevant analytical methods or follow this link for more information. 

Reported Adulterants Ginkgo (Ginkgo biloba) leaf extract with added flavonol glycosides or aglycones (e.g., rutin, quercetin, etc.).

Source: AHPA Known Adulterants

Calcium oxalate crystal, polarized, 200X in glycerin:dionized water solution.epidermis has irregularly sinuous walls, often with palisade parenchmya, stomata deeply sunken surrounded by 6-8 subsidiary cells, various sizes of calcium oxalate cluster crystals abundant Source: Amy Brush, Traditional Medicinals and European Pharmacopoiea

Ginkgo biloba (leaf)

Source: Information Request