Cluster analysis of the biochemical composition in 53 Sichuan EGCG3"Me tea resources

2017 2nd International Seminar on Advances in Materials Science and Engineering

Li, J.H.^1,2 ; Chen, S.X.^1 ; Zhu, M.Z.^1 ; Meng, X.L.^1

College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China^1

National Tea Product Quality Supervision and Inspection Center (Sichuan), Ya'an Sichuan, China^2

关键词: Biochemical composition;    Chongqing;    Fujian Province;    Green tea;    HPLC-DAD;    Oolong tea;    Sichuan;    Tea leaves;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/231/1/012125/pdf
DOI  :  10.1088/1757-899X/231/1/012125

来源: IOP

【 摘 要 】

The EGCG3"Me contents in the young tea leaves of 102 tea resources in sichuan were analyzed accurately using HPLC-DAD. The results revealed that there was a wide variation in EGCG3"Me levels among different tea resources. The EGCG3"Me content in different tea resources was in a range from 0 to 11.04 mg/g, mean was 2.33 mg/g.53 tea resources contained EGCG3"Me, accounting for 51.96% of the total number of resources survey. Shucha5, Jinguanyin, Chengxi11, Fenghuang-dancong, Chongpi 71-1 were found to contain higher EGCG3"Me content (>10mg/g).Cluster analysis showed that: 53 Sichuan EGCG3"Me tea resources were divided into six groups and the difference was obvious between their biochemical composition; tea resources rich in EGCG3"Me were mainly distributed in Sichuan, Chongqing and Fujian Province, mostly were shrub and mid-leaf, mainly existed in tea resources which were suitable to make green tea, oolong tea. The morphological and biochemical distribution provided a good theoretical basis for selecting and utilizing higher EGCG3"Me resources.