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银杏叶中黄酮类化合物最佳提取工艺研究(Ⅰ) 被引量:69

Study on optimum extraction process of flavonoids from Ginkgo biloba L
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摘要 用正交实验探讨银杏叶中黄酮类化合物的最佳提取工艺。研究结果表明:在90℃条件下用9倍于叶重体积的70%乙醇回流提取4次,每次1h,银杏叶黄酮糖苷提取效果最好,其平均浸出率可达(95.6±1)%。分光光度法测总黄酮的回收率为102.8%,7次平行测定的相对标准偏差CV为0.41%。 The optimum extracting conditions of flavonoids in Ginkgo biloba L.were investigated by using the orthogonal design.The results showed that 90℃,9∶1 of 70% ethanol to Ginkgo biloba L.weight ratio,extraction for 4 times and lh for each time were optimal.The average extraction rate was as high as (95 6±1)%.The average recovery of total flavonoids determined by spectrophotometry was 102 8% and the coefficient of variation was 0 41%.
出处 《食品工业科技》 CAS CSCD 北大核心 1997年第5期49-51,共3页 Science and Technology of Food Industry
关键词 银杏叶 黄酮类化合物 提取工艺 Ginkgo biloba L flavonoids optimum extracting process
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