发明申请
US20010043976A1 Ginkgo biloba flavonoid extract free of terpene and/or with a high flavonoid heteroside content 审中-公开
银杏叶黄酮提取物不含萜烯和/或具有高黄酮类杂苷含量

Ginkgo biloba flavonoid extract free of terpene and/or with a high flavonoid heteroside content
摘要:
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)ORnull wherein R and Rnull are individually lower alkyl.
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