武夷岩茶水仙茶青挥发性组分的HS-GC/MS分析

HS-GC/MS Analysis of Volatile Components of Wuyi Rock Tea Shuixian Fresh Leaves from Three Planting Locations

采用HS-GC/MS方法测定武夷岩茶“水仙”品种在百花岩、东山、洲地等三个不同产地的茶青的挥发性组分,并对其共有的挥发性物质进行了主成分分析。结果表明:三个产地“水仙”品种的茶青均含有己醛、反-2-己烯醛、顺-3-己烯-1-醇、1-己醇、2-戊基呋喃、顺-3,7-二甲基-1,3,6-辛三烯、2-羟基丙酸-5-甲基-2-(1-甲基乙基)环己酯、氧化芳樟醇、顺-3-己烯醇-2-甲基丁酸酯、顺-己酸-3-己烯酯、ɑ-法呢烯等成分,这些相对含量较高的物质具有较强的呈香特性,构成了被检测的“水仙”品种茶叶的主要挥发性特征成分。

HS-GC/MS method was employed to analyze the unique volatile components in fresh leaves of Shuixian variety from three planting locations Baihuayan,Dongshan and Zhoudi,and principle component analysis was conducted based on their common volatile substances.The results showed that,the samples from three places of origin all contained the following substances identified by GC/MS:hexanal,trans-2-hexenal,cis-3-hexen-1-ol,1-hexanol,2-pentylfuran,(Z)-3,7-dimethyl-1,3,6-octatriene,Ethyl-2-(5-methyl-5-vinyltetrah ydrofuran-2-yl)propan-2-yl-carbonate,linalool oxide,cis-3-hexenyl-2-methyl butyrate,(Z)-Hexanoic acid-3-hexenyl ester,alpha-farnesene.These relatively high content substances owned strong aroma characteristics,which made up the main characteristic volatile components in the tested Shuixian tea variety.