湖北省地方审定茶树品种中儿茶素含量分析

摘要

以12个湖北省地方审定茶树品种为供试材料，采用高效液相色谱法（ HPLC ）检测分析8种主要儿茶素组分含量。结果表明，儿茶素各组分变异系数在19.73％～67.17％之间，变异幅度较大；非酯型儿茶素组分含量间的变化趋势不明显，而酯型儿茶素各组分含量大小为EGCG＞GCG＞ECG＞CG。基于儿茶素品质指数进行聚类分析显示，鄂茶1号、鄂茶8号、鄂茶10号3个茶树品种可以作为适制名优绿茶的品种；五峰212、五峰310、鄂茶3号、鄂茶6号4个茶树品种EGCG含量高，可用于开发特殊茶饮；鄂茶2号儿茶素品质指数最低，适制红茶，但其EGC和儿茶素总量最高，应在今后的生产和育种中善加利用。%The contents of 8 main catechins in 12 local registered tea cultivars in Hubei Province were determined by high performance liquid chromatography (HPLC).The results showed that the variation coefficients of catechins'contents ranged from 19.73%to 67.17%.No significant trend was found within non-esterified catechins , while con-tents of ester catechins decreased in the order of epigallocatechin gallate ( EGCG ) >gallocatechin gallate ( GCG ) >epicatechin gallate(ECG)>catechin gallate(CG).According to the cluster analysis based on catechin quality in-dex, the varieties Echa 1, Echa 8 and Echa 10 were suitable for the production of high quality green tea .Wufeng 212 , Wufeng 310 , Echa 3 and Echa 6 with high EGCG level could be used for the development of special tea drinks . Echa 2 contained high EGC and total catechin level .Therefore, it was of great potential for the breeding and produc-tion of black tea .