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SPME-GC-MS分析普洱茶的挥发性成分

Analysis of Volatile Components in Pu-er Tea by SPME-GC-MS

  • 摘要: 采用固相微萃取(SPME)前处理方法分别从生茶和熟茶两种不同发酵过程的普洱茶叶中提取挥发性成分,用气相色谱-质谱(GC-MS)联用法定性。结果表明:两种茶叶共检测出60种挥发性成分,生茶检出44种,熟茶检出43种,共同组分27种。生茶的主要挥发性成分有:1,2,3-三甲氧基苯、环氧芳樟醇、藜芦醚、氧化芳樟醇、β-芳樟醇、α-松油醇等物质;熟茶的主要挥发性成分有: 5-甲基-2-己酮、四氢芳樟醇、氧化芳樟醇、β-芳樟醇、异丁醚、α-松油醇等组分。二者得到的成分及含量有着较为明显的差别。

     

    Abstract: Volatile components from two kinds of Pu-er tea, namely raw tea and ripe tea by two different fermentation processes were extracted by solid phase micro-extraction(SPME) and qualitatively analyzed by gas chromatography/mass spectrometry(GC-MS). The result showed that 60 volatile compounds were identified from two kinds of Pu-er tea, including 44 from raw tea and 43 from ripe tea and 27 from both of them. The main volatile compounds of raw tea were 1,2,3-trimethoxybenzene, epoxylinalol, veratrol, linalool oxide, β-linalool, α-terpineol,etc. The main volatile compounds of ripe tea were 5-methyl-2-hexaone, tetrahydrolinalool, linalool oxide, β-linalool, iso-butyl ether, α-terpineol, etc. There are significant differences among component and content in raw tea and ripe tea on account of fermentation difference.

     

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