贵定鸟王种茶叶中咖啡因和儿茶素类检测分析

目的]对贵州省贵定县鸟王种茶叶中咖啡因和儿茶素类含量进行检测分析及系统研究。方法]以茶叶中重要的生物活性物质咖啡因和儿茶素类为研究对象,利用高效液相色谱法同时测定鸟王种茶叶中咖啡因和儿茶素类的含量,并对鸟王茶不同类型茶叶的咖啡因和儿茶素类含量进行对比分析。结果]试验得出,咖啡因和儿茶素类在鸟王种茶新叶与成熟叶之间存在显著差异,新叶中咖啡因和儿茶素类含量高于成熟叶中的含量。结论]研究可为鸟王茶的生产加工选取原料提供科学的依据,同时为鸟王茶的种植推广与品牌建立提供数据支撑。

Determination and Analysis of Content of Caffeine and Catechins in Niaowang Tea in Guiding

Objective] To determine and analyze caffeine and catechins contents in Niaowang Tea in Guiding County,Guizhou Province.Method] With important bioactive substances caffeine and catechins in tea as study objects,HPLC method was used to determine caffeine and catechins content in Niaowang Tea,and the contents were compared in different varieties of Niaowang Tea.Result] The results showed that the content of caffeine and catechins between tender leaves and old leaves were significantly different,the content of caffeine and catechins in tender leaves were higher than in old leaves.Conclusion] The study can provide scientific basis for selecting materials during processing of Niaowang Tea,and provide data support for extension planting and variety establishing of Niaowang Tea.