2002•Chinese Journal of PharmaceuticalsRequires access
Preparation of Extracts of Ginkgo biloba Leaves
Lei Tian
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Abstract
The Ginkgo biloba Leaves extracts was prepared using reflux extraction method and ultrafiltration combined with absorption resin chromatography as purification method. Extraction conditions such as extraction reagents, the ratio of liquid to solid, extraction times, the condensing and drying temperature and extract time were optimized, and the extractive ration of total flavonoids was about 78% in the optimal condition. The purification process was effective, the content of total flavonoids was above 24%.