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US 2001/0043976 A1Published application
Ginkgo biloba flavonoid extract free of terpene and/or with a high flavonoid heteroside content
AssigneeSociete de Conseils de Recherches et d'Applications Scientifiques (S.C.R.A.S.)
InventorJoseph O'Reilly
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Abstract
A process for preparing a flavonoid extract from the leaves of ginkgo biloba comprising multiple distractions of the leaves of the ginkgo biloba with solvents wherein at least one of the extraction stages is a deterpenation step using a solvent of the formula RC(O)OR′ wherein R and R′ are individually lower alkyl.
Claims16
A flavonoid extract from the leaves of the ginkgo biloba, essentially free of terpenes.
A flavonoid extract from the leaves of the ginkgo biloba comprising 28 to 35% flavonoid heterosides, preferably from 28 to 32%.
Dependencies are inferred from the claim text.