班玛藏茶与云南普洱茶中咖啡因含量对比分析  

Caffeine Content Analysis a Banma Tibetan Tea and Yunnan Pu'er Tea

作　　者：尕土才让 才让措[1] 娘毛加 王宁芳[1] Gatucairang Cairangcuo NIANG Mao-jia WANG Ning-fang(Qinghai Normal University, Xining, Qinghai 810008)

机构地区：[1]青海师范大学,青海西宁810001

出　　处：《安徽农业科学》2017年第21期83-84,共2页Journal of Anhui Agricultural Sciences

基　　金：青海师范大学科技创新项目(Qhnuxskj2016016)

摘　　要：[目的]测定青海班玛藏茶和云南普洱茶茶叶中的咖啡因含量。[方法]采用索氏抽提法提取咖啡因,并对提取出的咖啡因含量进行粗略评价。[结果]班玛藏茶平均回收率为36.3%,咖啡因总量极少(0.000 7 g);云南普洱茶平均回收率为34.3%,咖啡因总量为0.207 5 g。[结论]不同生境的茶叶咖啡因含量各不相同。[ Objective ] To determine caffeine content of Qinghai Banma Tibetan tea and Yunnan Pu＇ er tea. [ Method] Caffeine was extracted by Soxhlet extraction method and make a rough evaluation for extracted caffeine. [ Result] The average recovery rate and total caffeine content of Banma Tibetan tea were 36.3% ,0.000 7 g,respectively. The average recovery rate and total caffeine content of Yunnan Pu＇ er tea were 34. 3% ,0.207 5 g,respectively. [ Conclusion] Tea caffeine content are not identical in different habitats.

关 键 词：班玛藏茶 普洱茶 索氏抽提法 咖啡因 

分 类 号：TS272[农业科学—茶叶生产加工]