Comparative analysis on the quality of Wuyi Rougui (Camellia sinensis) tea with different grades

Wuyi Rock tea is one of well-known in China. The ‘Spring Tea Competition’ every year a big event industry Wuyishan City. In this paper, 667 samples with four grades Rougui teas from Competition, 2019’ were collected to determine quality indexes. relationship between the index and was analyzed. results showed that higher grade teas, total score (TQS) sensory evaluation. Most indexes had same tendency TQS. contents polyphenols, soluble sugar, catechins significantly different teas. PCoA could be effectively distinguished by caffeine, epigallocatechin gallate, positively correlated TQS These suggested content multicomponents material basis high tea. caffeine catechin can used evaluate difference ratio phenols amino acids, ester non-ester catechins, characteristic acids are important hallmark top