苦丁茶中咖啡碱的提取  

Extraction of Theine from llet latifolia Thunb

作　　者：张帅[1] 

机构地区：[1]肇庆学院轻工化学系,广东肇庆526061

出　　处：《安徽农业科学》2007年第16期4930-4930,4977,共2页Journal of Anhui Agricultural Sciences

摘　　要：利用溶剂萃取法结合升华法从苦丁茶中提取咖啡碱,对萃取剂、苦丁茶用量及提取时间进行了分析,研究了苦丁茶中咖啡碱的提取工艺和含量。结果表明,最佳提取工艺条件为：乙醇浓度75%,苦丁茶用量14 g,提取时间2 h,产量0.132 g。此工艺条件下,苦丁茶中咖啡碱含量为0.94%。In lad test, the theine from llet Latifolia 3hanb was extracted by solvent extraction combined with sublimation method and the dosage of extraction agent and llet latifolia, and extraction time were analyzed to study the extraction technology and content of theine in llet Latifolia Thuub. It was found that the optinmm extraction conditions were as following： 75 % ethanol, 14g Ilet latifolia, extracting for 2 hours and yield of 0. 132g, under which, content of theine in llet Latifolia was 0. 94%.

关 键 词：苦丁茶 咖啡碱 乙醇 

分 类 号：S571.1[农业科学—茶叶生产加工]