银杏叶粗提和纯化新工艺研究  

Study on New Technical Conditions for Ginko biloba Extraction and Purification

作　　者：张爱军[1] 刘发义[1] 石红旗[1] 沈继红[1] 石书河[1] 

机构地区：[1]国家海洋局第一海洋研究所海洋生物活性物质重点实验室,青岛266061

出　　处：《食品科学》2003年第10期100-104,共5页Food Science

摘　　要：研究了工业化生产银杏叶的全新生产工艺:原料以石油醚回流提取,再以80%乙醇回流提取,减压浓缩,新型澄清剂沉降,树脂分级吸附,pH3～4酸水和酸性25%乙醇洗涤,75%乙醇洗脱,喷雾干燥,可以得到国际认可的黄酮和内酯含量分别达到24%和6%以上的银杏叶提取物(EGB)。The new technical conditions for the preparation of Ginkgo biloba extract were studied. The leaves of G.biloba wereextracted with petroleum ether and then 80% ethanol under reflux. The concentrated extract was treated with water, clarified andthen filtred. The necessary components in the filtrate were adsorbed on macro reticular resin, and eluated with 75% ethanol. Thealcoholic eluate after concentration, was spray dried and the final G.biloba extract was given with a flavonoid content>24% anda lactone content>6%.

关 键 词：银杏叶 粗提 纯化 生产工艺 黄酮 提取物 内酯 

分 类 号：R284.2[医药卫生—中药学] R282.71[医药卫生—中医学]