信阳毛尖茶叶挥发性成分GC/MS分析

Analysis of Volatile Components in Xinyang MaoJian Tea by GC/MS

本文采用SDE蒸馏萃取方法提取信阳毛尖茶叶的挥发性成分,用气质联用仪及SE-54和强极性BPX70毛细色谱管柱进行分离分析比较,中等极性SE-54毛细色谱管柱分离效果较好,春茶挥发性成分中共分离并鉴定出47个峰;夏茶挥发性成分中共分离并鉴定出64个峰。对比夏茶与春茶在香气成分上的差异,综合评价春茶的香气品质优于夏茶。

Volatile components of Xinyang MaoJian tea was extracted by method of SDE (Simultaneous Distillation and Extraction),and determimed by GC/MS with two different polar capillary columns SE-54 and BPX70. It is found that the semi polar capillary column SE-54 is better than the high polar column BPX70. With SE-54,45 volatile constituents of spring tea and 63 constituents of summer tea were identified. By comparing the difference between the spring tea and summer tea volatile constituents, it is found that the aroma quality of the spring tea is better than that of the summer tea.