Analysis of Differences in Biochemical Components Between Yunnan and Kenya Tea Tree Varieties

• 作者: Benying LIU Shengmei YANG Weiqiong SHANG Yichun TANG Youyong LI Yunxiu BAO Zhifen DUAN
• 来源期刊: 农业生物技术:英文版
• 学科: 农学
• 关键词: YUNNAN Kenya Tea varieties Biochemical components Cluster analysis Genetic distance
• 年，卷（期）: 2020,（4）
• 页码范围: 36-40
• 页数: 5页
• 分类号: S51

摘要

With 16 Yunnan tea tree varieties and 5 Kenya tea tree varieties as test materials,the differences in biochemical components between Yunnan and Kenya tea tree varieties were compared and analyzed.The results showed that the coefficients of variation of tea polyphenols,amino acids,caffeine,water extract,gallic acid(GA),catechin(C),epicatechin(EC),epicatechin gallate(ECG),epigallocatechin(EGC),epigallocatechin gallate(EGCG)and total catechins in Yunnan tea tree varieties were greater than those in Kenyan tea trees.The contents of tea polyphenols,amino acids,caffeine,water extract,C,EC,EGC,EGCG and total catechins in Yunnan tea tree varieties had no significant differences from those in Kenyan tea trees varieties(P>0.05),while there were significant differences in the contents of GA and ECG between Yunnan tea tree varieties and Kenya tea tree varieties(P<0.05).Therefore,it could be predicted that GA and ECG might be one of the main characteristics of the differences in biochemical components between Yunnan tea tree varieties and Kenyan tea tree varieties.The cluster analysis results showed that when the genetic distance was 15,the 21 tested tea varieties could be divided into three groups with obvious biochemical differences.