茶酒挥发性物质及其不同检测条件对比研究

Comparative Study on Volatile Compounds in Tea Liquor by Different Detection Conditions

基于茶酒挥发性物质的检测分析,采用顶空固相微萃取-气相色谱-质谱联用(HS-SPME-GC-MS),对比分析4种不同GC-MS条件对茶酒挥发性物质定性定量结果,并研究了茶酒中挥发性物质组成。结果表明:基于HS-SPME-GC-MS方法,4种条件共检出94种挥发性物质,不同分析条件的检测结果存在一定差异;茶酒挥发性物质主要由酯类、酸类、醇类、醛类、酮类、烯类物质组成,酯类物质占83.82%~93.80%,其中己酸乙酯含量最高,可达67.26%;醇类物质中1-己醇和异戊醇含量相对较高,酸类物质以己酸含量最高;茶酒中检出了芳樟醇、苯乙醇、水杨酸甲酯、苯甲醛、月桂酸乙酯等茶叶中常见的挥发性物质。

For the detection and analysis of volatile compounds in tea liquor,the method(head-spacesolid phase microextraction-gas chromatography-mass spectrometry,HS-SPME-GC-MS)for the analysis of volatile compounds was used in this study.The qualitative and quantitative results of volatile compounds in tea liquor under four different GC-MS conditions were compared and analyzed.On this basis,the volatile components in tea liquor were studied.The results showed that 94 kinds of volatile compounds were detected by the four GCMS conditions,and the detection results of tea liquor by different methods were variant.The volatile compounds in tea liquor were mainly composed of esters,acids,alcohols,aldehydes,ketones and alkenes.Esters were the main components of volatile compounds in tea liquor,accounting for 83.82%~93.80%.Among them,ethyl caproate has the highest content,up to 67.26%.The content of 1-hexanol and isoamyl alcohol in alcohols was relatively high.Hexanoic acid was the highest content of acids.In addition,linalool,phenylethanol,methyl salicylate,benzaldehyde and ethyl laurate were detected in tea liquor.