不同品种大佛龙井茶的汤色与滋味属性特征

Infusion color and taste characteristic of Dafo Longjing tea processed from different cultivars

通过对"浙农113"、"平阳特早茶"、"迎霜"、"龙井43"、"嘉茗1号"、"翠峰"、"白叶1号"、"鸠坑群体种"8个品种加工的大佛龙井茶进行感官属性量化描述、品质成分定量检测及两者间的相关性分析,深入探究大佛龙井茶汤色与滋味的特征属性。结果表明,"龙井43"、"迎霜"和"嘉茗1号"的综合感官品质较优。色差分析结果表明,亮度高、黄绿度适中的大佛龙井茶汤品质较高,且杨梅素苷类和槲皮素苷类物质与大佛龙井茶汤色泽有显著相关性。在滋味属性因子中苦度及涩度与大佛龙井茶汤滋味有显著相关性,而厚度滋味的感受是对单独味觉的补充,可能会对茶汤风味起到至关重要的作用。不同品种大佛龙井茶的滋味成分含量差异显著,鲜味氨基酸与鲜度呈显著正相关,咖啡碱、表没食子儿茶素、表没食子儿茶素没食子酸酯、没食子儿茶素没食子酸酯和杨梅素苷类与苦度、涩度呈显著正相关,与甜度呈显著负相关。黄酮苷类物质虽然在茶汤中含量较少,但表现出与大佛龙井茶汤色和滋味属性较为显著的相关性。

Dafo Longjing tea,as one of top ten famous teas in Zhejiang Province,is mainly produced in Xinchang County and popular with consumers because of its fresh-tender aroma and soft-mellow taste.It is significantly different from other kinds of Longjing teas including famous Xihu-Longjing tea,and occupies large market share;however,studies on quality features and related components of Dafo Longjing tea are rather few at present.In order to delve deeply into the mechanism of quality formation of Dafo Longjing tea,systematic analyses of correlation between liquor-taste properties and chemical constituents were performed in this study.