食品科学 ›› 2017, Vol. 38 ›› Issue (10): 199-203.doi: 10.7506/spkx1002-6630-201710033

• 成分分析 • 上一篇    下一篇

HS-GC-O-MS分析细叶韭花易挥发性风味成分

许曼筠,张 婕,李美萍,尉立刚,郭彩霞,张生万   

  1. 山西大学生命科学学院,山西 太原 030006
  • 出版日期:2017-05-25 发布日期:2017-05-23
  • 基金资助:
    山西省基础研究计划(青年基金)项目(2015021139)

Analysis of the Volatile Compounds in the Flowers of Allium tenuissimum by Headspace-Gas Chromatography- Olfactometry-Mass Spectrometry

XU Manjun, ZHANG Jie, LI Meiping , YU Ligang, GUO Caixia, ZHANG Shengwan   

  1. College of Life Science, Shanxi University, Taiyuan 030006, China
  • Online:2017-05-25 Published:2017-05-23

摘要: 采用顶空-气相色谱-质谱联用技术对细叶韭花中易挥发性成分的萃取条件及气相色谱-质谱分离检测条件 进行系统研究,并结合嗅闻仪确定挥发性风味成分。在选定HP-5MS色谱柱的分离条件下,最优顶空条件为样品用 量1.0 g/20.0 mL顶空瓶,平衡温度100 ℃,平衡时间40 min。结果表明:经气相色谱-嗅闻-质谱联用分析,共分离 得到52 种化合物,确定结构46 种,占总易挥发性成分的99.15%。其中,含硫类17 种、醛类10 种、烃类4 种、酮类 4 种、呋喃类3 种、醇类4 种、酸类2 种、芳香族类1 种、萜类1 种。根据嗅闻结果结合相对气味活度值可得,细叶 韭花挥发性风味成分主要是二甲基硫醚、二甲基二硫醚、二甲基三硫醚、3-甲基丁醛、2-甲基丁醛、1,3-二噻烷。

关键词: 顶空, 气相色谱-嗅闻-质谱法, 细叶韭花, 挥发性风味成分

Abstract: The extraction and gas chromatography-mass spectrometry (GC-MS) conditions for analysis of volatile flavor compounds in Allium tenuissimum flowers were systematically studied. An HP-5MS chromatographic column was chosen and the optimal conditions were determined. In this investigation, 1.0 g of sample was extracted at 100 ℃ for 40 min in a 20-mL headspace vial. Under these conditions, a total of 52 compounds were isolated by headspace-gas chromatographyolfactometry- mass spectrometry (HS-GC-O-MS), of which 46 accounting for 99.15% of the total volatile substances, were structurally identified. These compounds included 17 sulfurs, 10 aldehydes, 4 hydrocarbons, 4 ketones, 3 furans, 4 alcohols, 2 acids, 1 aromatic compound, and 1 terpenoid compound. According to the result of olfactometry and relative odor activity value (ROAV), the main flavor volatile components were identified as dimethyl sulfide, 2-methyl-,disulfide, dimethyl trisulfide, 3-methyl-,butanal, 2-methyl,butanal, and 1,3-dithiane.

Key words: headspace, gas chromatography-olfactometry-mass spectrometry, Allium tenuissimum flowers, volatile flavor components

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