梅占、福选9号两个茶树品种的叶绿素组成及色泽比较

Chlorophyll and Color Comparison of Two Tea Varieties of Meizhan and Fuxuan 9

[目的]为探讨不同茶树品种叶绿素组成及色泽的具体差异大小。[方法]采用混合液法(体积比,纯丙酮∶无水乙醇∶蒸馏水=4.5∶4.5∶1.0)及色差计法,对梅占、福选9号2个品种的叶绿素组成及干茶色泽、汤色、叶底色泽进行测定。[结果]梅占的叶绿素a、叶绿素b、叶绿素总量均高于福选9号,且差异显著;干茶、茶汤、叶底色差测定表现为梅占品种的亮度不如福选9号,但梅占相对绿度重,福选9号相对黄度重。[结论]不同茶树品种间叶绿素含量及组成存在差异,且差异的大小直接影响到绿茶的成茶色泽,梅占的成茶色泽要优于福选9号。

[ Objective ] The research aimed to study chlorophyll composition and color specific differences about different tea-tree varieties. [ Method ] Chlorophyll-composition and dry-teacolor,liquor color,infusion color of Meizhan and Fuxuan 9 were tested and analyzed by using the method of mixture （volume ratio, acetone： anhydrous ethanol： distilled water =4.5： 4.5： 1.0） and colorimeter. [ Result] Chlorophyll a, chloro- phyll b and total chlorophyll of Meizhan were higher than those of Fuxuan 9, and the brightness and the yellow ratio were better than those of Meizhan, but the green ratio of Meizhan was more. [ Conclusion] Chlorophyll content and the composition have differences among different tea va- rieties. The differences directly affect the tea color. Tea color of Meizhan is better than Fuxuan 9.