Ginkgo Biloba Extract
Ginkgo leaves have complicated components, and main chemical components include flavonoid glycosides, terpenes, polyprenols, polyprenols, 6-hydroxykynurenic acid (6HKA), organic acid, phenolic acids, alkylphenol, alkylphenolic acids (also named ginkgolic acid), 4’-O-methypyridoxine, etc. The flavonoids compounds in ginkgo leaves include flavone and baicalin, biflavone and catechinic acid. The total flavonoid glycosides may not be less than 24.0% on dried basis. The content of bilobalide (C15H18O8) calculated as the sum of Ginkgolide A (C20H24O9), Ginkgolide B (C20H24O10) and Ginkgolide C (C20H24O11) may not be less than 6.0%.