茶叶学报2026，Vol.67Issue(2)：35-46,12.DOI:10.20045/j.cnki.issn.2096-0220.2026.02.005
基于多元统计分析的不同茶树品种制作永泰绿茶品质差异
Biochemical Differentiations among Three Yongtai Green Teas
摘要
Abstract
[Objective]Differential biochemical compositions of three varieties of tea cultivars in Yongtai,Fujian,were analyzed for germplasm preservation and marketing promotion.[Method]A comprehensive evaluation on Camellia sinensis cv.'Fuding Dabaicha','Longjing 43',and'Baiye 1'was carried out based on sensory evaluation,biochemical determination,and multivariate statistical correlation,principal component,cluster,and partial least squares-discriminant analyses.[Result]The contents of water extract in the three varieties of tea ranged 48.07%-49.53%,polyphenols 18.43%-22.19%,total catechins 72.62-107 mg·g-1,caffeine 20.43-28.42 mg·g-1,and total free amino acids 51.49-59.96 mg·g-1.There were 21 free amino acids,including 28.68-32.86 mg·g-1 of theanine,detected in them.The biochemicals in the teas were significantly similar among the teas,and the five principal components constituted a cumulative variance contribution rate of 87.77%.The clustering analysis based on the biochemical composition classified the teas into three categories.The A-class tea contained high contents of water extract,polyphenols,and catechins,while the B-and C-classes had high contents of individual and total amino acids.The classification was consistent with the results obtained by sensory evaluation.[Objective]All three tea cultivars from Yongtai were considered suitable for making high-quality green tea with high water extract,amino acids,and theanine.In comparison,Longjing 43 and Anji Baicha had greater contents of individual amino acids,total amino acids,and tea polyphenols than Fuding Dabaicha,whereas Anji Baicha topped the three varieties on catechins.关键词
永泰绿茶/感官品质/生化成分/相关性分析/主成分分析/聚类分析Key words
Yongtai green teas/quality evaluation/biochemical composition/correlation analysis/principal component analysis/cluster analysis分类
农业科技引用本文复制引用
陈静,林馨颖,黄晓东,倪锦榕,兰振良,徐梦婷,张宇航,叶乃兴..基于多元统计分析的不同茶树品种制作永泰绿茶品质差异[J].茶叶学报,2026,67(2):35-46,12.基金项目
福建农林大学横向课题(KH230191A) （KH230191A）
2022年福建省第四批高职院校产业学院试点项目(闽教职成[2022]38号) （闽教职成[2022]38号）
福建省第二期高水平高职学校和专业建设计划立项建设学校A类专业群:茶叶生产与营销专业群(闽教职成[2026]4号). （闽教职成[2026]4号）
