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.
作者
尕土才让
才让措
娘毛加
王宁芳
Gatucairang Cairangcuo NIANG Mao-jia WANG Ning-fang(Qinghai Normal University, Xining, Qinghai 810008)
出处
《安徽农业科学》
CAS
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)
关键词
班玛藏茶
普洱茶
索氏抽提法
咖啡因
Banma Tibetan tea
Puer tea
Soxhlet extraction
Caffeine
Comparison and analysis
作者简介
尕土才让（1994-），男，青海贵德人，本科生，专业：化学教育。
通讯作者，教授，从事有机合成及分析研究。
