摘要
银杏提取物主要含黄酮和内脂,其有效成份主要为山奈酚、槲皮素和异鼠李素等[1],银杏叶总黄酮按其分子母核结构可分为四类:黄酮醇及其甙、黄酮及其甙、黄烷醇和双黄酮类.国内外对银杏有效成份的提取精制研究工作十分重视,主要运用的提取方法有溶剂提取、超声提取、微波提取[2]和超临界萃取法[3,4]等,后三种方法由于设备耗资大、操作复杂,工业应用尚受限制,有机溶剂提取法是一种经济实用的有效方法,但其工艺有待进一步优化.
The optimum extract conditions of the total flavones from Ginkgo bilobal L. were determned by experiments, the product were characterized with IR,UV, Flu. As a result , the optimum extracting and refining conditions is 1.5 of 70% ethanol to Ginkgo biolba L. weight , extraction for 2 times and 3 h for each time , 1 ： 20 of kieselguhr to Gitnkgo bioloa L. weight , 2.3：1 of 70% ethanol to Ginkgo biolba L. to wash flavones. The output rate of refined product was 3.90% and the content of total flavones in the refined product was 93.90%.
出处
《阜阳师范学院学报（自然科学版）》
2005年第3期55-57,共3页
Journal of Fuyang Normal University(Natural Science)
基金
国家级自然科学研究项目(30270321)
关键词
银杏叶
黄酮
提取
表征
gingko leaf
flavones
withdraws
attribute
