湖北省地方审定茶树品种中儿茶素含量分析

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。

Quantitative analysis of catechins in local registered tea cultivars in Hubei Province

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 contents 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 index， 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 production of black tea.