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.
作者
满雪玉
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)
出处
《云南化工》
CAS
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)
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)
Douyun Maojian Tea
Meitan Cuiya Tea
Fenggang ZnSe-rich Tea
Caffeine
Ultra Performance Liquid Chromatography(UPLC)