模拟日常饮茶方式浸泡茶水中咖啡因测定  

Detection of Caffeine in Tea Made by Simulating Daily Drinking Manner

作　　者：满雪玉[1] 曹礼刚 蒙朝阳 王敏 叶林珠 张凌冰 Man Xueyu;Cao Ligang;Meng Zhaoyang;Wang Min;Ye Linzhu;Zhang Lingbing(College of Pharmacy,Zunyi Medical University,Zunyi 563000,China)

机构地区：[1]遵义医学院药学院,贵州遵义563000

出　　处：《云南化工》2018年第2期59-61,共3页Yunnan Chemical Technology

基　　金：遵义医学院硕士启动基金(项目编号:F-759);遵义医学院大学生创新创业训练计划项目(项目编号:遵医20163705)

摘　　要：目的:测量都匀毛尖、湄潭翠芽、凤冈锌硒茶所泡茶水中的咖啡因,为人们合理购茶、饮茶提供理论依据。方法:采用模拟日常饮茶方式浸泡茶叶,通过超高效液相色谱法测定茶水中的咖啡因。结果:湄潭翠芽所泡茶水中咖啡因含量最高,都匀毛尖次之,凤冈锌硒茶最低。浸泡时间对茶水中咖啡因的含量影响不大;浸泡水温越高,茶水中咖啡因含量越高;浸泡次数越多,茶水中咖啡因含量越低。结论:建立的超高效液相色谱法测定茶水中咖啡因的方法快速可靠。茶水中咖啡因含量受茶叶品牌、浸泡水温等因素影响。Purposes:To measure the coffeine in water of Douyun Maojian Tea,Meitan Cuiya Tea and Fenggang ZnSe-rich Tea.It provides a theoretical basis for people to buy tea and drink tea rationally.Methods:The tea were made in a simulated daily drinking manner,Ultra Performance Liquid Chromatography was applied to measure the content of caffeine.Results:The highest amount of caffeine was found in the water of Meitan Cuiya Tea,the higher was DouYun Maojian Tea,and then was Fenggang ZnSe-rich Tea.The time of make tea had little effect on the amount of caffeine in the water;higher temperature of water,more caffeine in the tea;more times you made,lower caffeine in the tea.Conclusions:Establishment a method of measured the caffeine by Ultra Performance Liquid Chromatography,the content of caffeine in the tea was affected by brands,the temperature and so on.

关 键 词：都匀毛尖 湄潭翠芽 凤冈锌硒茶 咖啡因 超高效液相色谱法(UPLC) 

分 类 号：TS272[农业科学—茶叶生产加工]