安顺名优绿茶的感官品质与主要化学成分

Sensory Quality and Main Chemical Components of High-quality Green Tea in Anshun City

为安顺名优绿茶品质的提升及茶叶生产提供指导,以安顺翠芽绿茶和毛尖绿茶为材料,采用感官审评、常规成分测定和SPME/GC-MS联用技术对安顺绿茶的感官品质、主要化学成分和香气成分进行分析。结果表明:1)安顺毛尖绿茶的综合感官品质总评分为86.60分,翠芽绿茶为79.25分。2)安顺毛尖绿茶的水浸出物、茶多酚、游离氨基酸总量、可溶性糖含量分别为45.67%、26.61%、2.37%和3.41%,均高于翠芽绿茶(44.65%,25.12%,2.09%,3.06%);而咖啡碱、儿茶素和酚氨比值分别为3.16%、6.26%和11.23,均低于翠芽绿茶(3.58%,6.31%,12.02)。3)从毛尖绿茶和翠芽绿茶中分别鉴定出44种和46种化学成分,分别占总含量的83.34%和82.92%。其中,毛尖绿茶中的烯烃类、醇类、酮类、酯类、酚类和杂环类总量比翠芽绿茶高7.37百分点,醛类和烷烃类总量比翠芽绿茶低6.92百分点。

The sensory quality,main chemical components and aroma components of two high-quality green teas （Cuiya and Maoj ian）were evaluated and analyzed by sensory evaluation and SPME/GC-MS to provide a reference for quality improvement and production of high-quality green teas in Anshun City.The results showed that ：1）Total score of integrated sensory quality of Cuiya and Maojian is 86.60 and 79.25 separately;2）The content of water extract,tea polyphenol,free amino acid and soluble sugar of Maojian and Cuiya is 45.67%,26.61%,2.37% and 3.41%,and 44.65%,25.12%,2.09% and 3.06%separately.The caffeine,catechin and phenols/ammonia ratio of Maoj ian and Cuiya is 3 .1 6%,6 .2 6% and 11.23,and 3.58%,6.31% and 12.02 respectively;3）44 and 46 chemical components are determined in Maojian and Cuiya,account for 83.34% and 82.92% of total content respectively.Total olefins,alcohols, ketones,esters,phenols and heterocyclic content of Maojian is 7.37% higher than Cuiya but its aldehydes and alkane content is 6.92% lower than Cuiya.