食品科学 ›› 2012, Vol. 33 ›› Issue (20): 238-242.

• 分析检测 • 上一篇    下一篇

桑叶绿茶香气成分的SPME-GC-MS分析

刘 学1,刘 飞1,黄先智2,杨 坚1,3,*   

  1. 1.西南大学食品科学学院 2.西南大学科学技术处 3.重庆市农产品加工及贮藏重点实验室
  • 收稿日期:2011-08-24 修回日期:2012-08-25 出版日期:2012-10-25 发布日期:2012-11-09
  • 通讯作者: 杨坚 E-mail:jianyang@swu.edu.cn
  • 基金资助:

    现代农业产业技术体系建设专项资金资助项目

Analysis of Aroma Compounds in Mulberry Leaf Green Tea by SPME-GC-MS

  • Received:2011-08-24 Revised:2012-08-25 Online:2012-10-25 Published:2012-11-09

摘要: 为研究桑叶绿茶香气成分,采用顶空固相微萃取-气相色谱质谱联用法结合计算机检索对其进行成分分析鉴定。结果表明:桑叶绿茶香气成分中醛类含量最高;不同季节制成的桑叶绿茶有39种共有香气化合物,主要为苯甲醛、1-辛烯-3-醇、6-甲基-5-庚烯-2-酮、(E,E)-2,4-庚二烯醛、2-乙基-己醇、壬醛、癸醛、β-环柠檬醛、1-甲氧基-4-(1-丙烯基)-苯、香叶基丙酮、β-紫罗兰酮、十七烷等;其他化合物中α-法尼烯、β-罗勒烯、苯甲酸-(Z)-3-己烯-1-酯、吲哚、雪松醇、萘及其衍生物、植醇、正己醛等物质在各样品中相对含量差异明显,其原因与桑叶采摘的季节有关;而正己醛、(Z)-2-庚烯醛、1-辛烯-3-醇等可能与桑叶绿茶香气中夹杂的豆腥味有关。

关键词: 桑叶绿茶, 顶空固相微萃取法(HS-SPME), 气相色谱-质谱联用法(GC-MS), 香气成分

Abstract: The composition of aroma compounds in mulberry leaf green tea was analyzed by headspace solid-phase micro-extraction and gas chromatography-mass spectrometry (SPME-GC-MS) combined with computer search. The results showed that aldehydes were the most predominant aroma compounds in mulberry leaf green tea. A total of 39 aroma compounds were identified in green tea of mulberry leaves harvested in different seasons, mainly including benzaldehyde, 1-octen-3-ol, 6-methyl-5-hepten-2-one, (E,E)-2,4-heptadienal, 2-ethyl-1-hexanol, nonanal, decanal, 2,6,6-trimethyl-1-cyclohexene-1-carboxaldehyde, 1-methoxy-4-(1-propenyl)-benzene, 6,10-dimethyl-5,9-undecadien-2-one, β-ionone, heptadecan, and so on. However, the components including α-farnesene, β-ocimene, (Z)-3-hexen-1-ol, benzoate, indole, cedrol, naphthalene and its derivative, phytol and hexanal revealed a significant seasonal difference in mulberry leaf green tea. Moreover, some compounds such as hexanal, 2-heptenal and 1-octen-3-ol might be related to beany flavor, which was mixed mulberry green tea aroma.

Key words: mulberry leaf green tea, headspace solid-phase micro-extraction, gas chromatography-mass spectrometry, aroma compounds

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