湖南沅陵4种绿茶品质成分分析

Analysis of Quality Components of Four Types of Green Tea of Yuanling

以长沙县高桥相同嫩度茶鲜叶原料采用卷曲形毛尖茶加工工艺制绿茶为对照,分别对沅陵县齐眉翠峰、凤娇碣滩茶、干发茶和军大坪茶4种绿茶的主要生化成分与感官品质进行初步分析。结果表明,沅陵4种绿茶的茶多酚总量28.76%~30.34%,游离氨基酸总量2.35%~3.22%,咖啡碱含量3.00%~3.63%,水浸出物含量37.26%~40.07%,可溶性糖总量5.46%~5.65%,可溶性蛋白含量1.50%~1.74%,类黄酮化合物总量1.16%~1.79%,叶绿素总量1.36%~2.01%,儿茶素总量13.53%~16.20%。与对照相比,4种绿茶的茶多酚、可溶性糖和儿茶素总量均高于对照,除齐眉翠峰外其余3种茶样水浸出物和叶绿素总量均高于对照,除干发茶外其余3种茶样类黄酮化合物总量均高于对照。

The main raw materials of same tenderness from Gaoqiao of Changsha County were used as control to analyze the main chemical ingredients and sensory taste of the four kinds of green tea in Yuanling County, Qi Mei Cuifeng, Fengjiao Jietan Cha, Ganfacha and Jundaping Cha. The results showed that the total amount of tea polyphenols in Yuanling four kinds of green tea was 28.76% - 30.34%, the total amount of free amino acids was 2.35% - 3.22%, the content of caffeine was 3.00% - 3.63%, the content of water extract was 37.26% - 40.07% The total amount of flavonoids was 1.16% - 1.79%, the total chlorophyll content was 1.36% - 2.01%, and the total amount of catechins was 13.53% - 16.20%. Compared with the control, the total contents of tea polyphenols, soluble sugar and catechins in four kinds of green tea were higher than those in the control. Except Qimeicuifeng, the other three kinds of tea samples, the total amount of tea extract and chlorophyll was higher than that of the control. The total amount of flavonoids in the other three kinds of tea samples was higher than that in the control group.