超声波提取银杏叶中总黄酮

Study on extraction of total flavone from ginkgo biloba leaves by ultrasonic wave

采用超声波从银杏叶中提取总黄酮 ,用均匀设计法确定了超声波提取总黄酮的最佳工艺条件为 :乙醇浓度 (φ) =67% ,超声波提取 67min ,浸泡 3 9h ,V (浸取剂 )∶m(银杏叶 ) =60mL∶1 g。对提取液中的脂溶性杂质、水溶性杂质分别采用超声波 -水法 ,聚酰胺柱法除去 ,用红外、热分析对产品进行了评价 ,其图谱与芦丁标准图谱相似。

The total flavones can be extracted from ginkgo biloba leaves by ultrasonic wave.According to the principle of uniform design, the best reaction condition is:alcohol(φ)=67%,time of extracting 67min,time of soaking 39 hrs, V(soaking geagent): m(ginkgo biloba leaves)=60 mL∶1 g. By using ultrasonic-water method and polyamide chromatography, fatty solubility impurity and water solubility impurity are removed.After product evaluation by using infrared absorption spectrum and thermal analysis, it shows that the product has similar to rutin in IR and TG .