Yingying Fan
Abstract
Process for the extraction of flavones from Ginkgo leaves with ethanol-water was studied,and content of flavones was determined by spectrophotometry.The optimal condition was chosen by orthogonal tests as extraction with 70% ethanol at 70 oC,ratio of solid to liquid 1: 20 and at pH 8,and the extraction rate of flavones reach 92.2%.
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Process for the extraction of flavones from Ginkgo leaves with ethanol-water was studied,and content of flavones was determined by spectrophotometry.The optimal condition was chosen by orthogonal tests as extraction with 70% ethanol at 70 oC,ratio of solid to liquid 1: 20 and at pH 8,and the extraction rate of flavones reach 92.2%.
Key concepts: Flavones, Extraction (chemistry), Ginkgo, Chemistry, Chromatography, Ethanol, Spectrophotometry, Botany