| Biochemical components including water extracts, polyphenols, amino acids, caffeine and catechins in the one bud and
three leaves of 24 fenghuang tea and 4 other kind of tea in spring shoots were analyzed in order to examine the biochemical components variation of fenghuang tea and compare the contents of corresponding components with 4 other kind of tea , and investigate the overall distribution of contents of 13 biochemical index in fenghuang tea that belong to the same type or the same aroma type living in different location by cluster analysis. The results showed that the contents of EC and water extracts respectively had the highest and lowest variation among the biochemical components, coefficient of variation reaching to 37.16% and 9.44%. Compared with fenghuang tea, except dayeqilanxiang, the other three materials had higher contents of non-esterified catechins and lower contents of esterified catechins in general; dayeqilanxiang had the highest content of amino acids and relatively lower contents of several other components. Cluster analysis showed that 4 other kind of tea were clustered to one group and fenghuang tea belonging to the same type or the same aroma type living
in different location were not completely clustered to one group. |
