作　　者： ; ; ; ; ;

机构地区： 汕头大学理学院

出　　处： 《广东农业科学》 2013年第5期22-26,共5页

摘　　要： 以24个凤凰茶和4个非凤凰茶的春梢一芽三叶样为供试材料,通过对水浸出物、茶多酚、氨基酸、咖啡碱和儿茶素类组分等生化成分进行测定,考查凤凰茶样中各生化组分的含量变化并与非凤凰茶样中对应组分的含量进行比较,用聚类分析法探究13个生化指标在不同地点生长的同一单丛或同一香型单丛中的含量总体分布情况。结果表明:生化组分中变化最大的是EC含量,变异系数达到37.16%;变化最小的为水浸出物含量,其值为9.44%。与凤凰茶样相比,除大叶奇兰香外,其余3个非凤凰茶样的酯型儿茶素类组分含量普遍较低,非酯型儿茶素类组分含量普遍较高;大叶奇兰香的氨基酸含量最高,其他各个组分含量均较低。聚类结果显示,4个非凤凰茶样被聚为一小类,生长于不同地点的同一单丛或同一香型单丛并不能被完全聚为一类。 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 fcnghuang 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.

关 键 词： 凤凰茶 生化成分 单丛 非凤凰茶 聚类分析

领　　域： [农业科学] [农业科学]