食品科学 ›› 2012, Vol. 33 ›› Issue (8): 248-251.doi: 10.7506/spkx1002-6630-201208055

• 分析检测 • 上一篇    下一篇

基于气质联用/ 气相色谱- 嗅觉测定技术的西湖龙井茶特征香气成分分析

汪厚银,李 志,张 剑,史波林,支瑞聪,赵 镭*   

  1. 中国标准化研究院食品与农业标准化研究所
  • 出版日期:2012-04-25 发布日期:2012-03-31
  • 基金资助:
    中央级公益性科研院所基本科研业务费专项(56096S-1838)

Determination of Characteristic Aromatic Components in Xihu Longjing Tea by GC-MS and GC-Olfactometry

WANG Hou-yin,LI Zhi,ZHANG Jian,SHI Bo-lin,ZHI Rui-cong,ZHAO Lei*   

  1. (Food and Agriculture Standardization Institute, China National Institute of Standardization, Beijing 100088, China)
  • Online:2012-04-25 Published:2012-03-31

摘要: 采用动态顶空(微阱捕集法,Itex)提取西湖龙井茶汤的香气物质,应用气质联用/气相色谱-嗅觉测定技术同时测定其挥发性呈香成分和嗅感特征,结合检测频率分析初步确定二甲硫醚、2-甲硫基丙醛、3-乙基-2,5-二甲基吡嗪、芳樟醇、α-松油醇、香叶醇和顺-茉莉酮为西湖龙井茶的特征香气成分。

关键词: 西湖龙井, 气质联用, 气相色谱-嗅觉测定, 特征香气, 动态顶空提取

Abstract: In order to simultaneously determine the aromatic composition and odor characteristics of Xihu Longjing tea by as chromatography (GC)-mass spectrometer (MS) and GC-olfactometry, volatile aromatic components were extracted from Xihu Longjing tea infusion in-tube extraction and direct thermal desorption (ITEX). It was confirmed that the compounds responsible for the characteristic aroma of Xihu Longjing tea were dimethyl sulfide, 2-(methylthio) propionaldehyde, 3-ethyl- 2,5-dimethylpyrazine, linalool, α-terpineol, geraniol and cis-jasmone.

Key words: Xihu Longjing tea, gas chromatography-mass spectrometer (GC-MS), GC-olfactometry, characteristic aroma, dynamic headspace extraction

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