银杏叶提取物的生产工艺条件研究  

Studies on the Productive Technology of Ginkgo(Ginkgo biloba)Extract

作　　者：陈冲 罗思齐[2] 

机构地区：[1]秦岭植物开发研究所,宝鸡721703 [2]上海医药工业研究院

出　　处：《中草药》1997年第7期402-404,共3页Chinese Traditional and Herbal Drugs

摘　　要：银杏叶以65％乙醇回流提取，减压浓缩，ZTC澄清剂沉降，酸性吸附，酸水和酸性25％乙醇洗涤，70％乙醇洗脱，喷雾干燥，加入由沉降残渣中分离的银杏总内酯，可以得到质量合格而稳定的银杏叶提取物（GBE），其黄酮和内酯含量分别达到26％和6％以上。Technical conditions for the preparation of Ginkgo leloba extract are optimized. The leaves of G. biloba are extracted with 65% ethanol under reflux. The concentrated extract is then treated with water,clarified and then filtred. The necessary components in the filtrate are adsorbed on macro reticular resin,and eluated with 70% ethanol. The alcoholic eluate after concentration,was spray dried and G. biloba lactones which have been prepared from the residue during clarifier treatment by means of column chromatography was added to give the final G. biloba extract with a flavonoid content>26% and lactone content>6%.

关 键 词：银杏黄酮 提取 银杏叶 工艺条件 

分 类 号：TQ461[化学工程—制药化工]