食品科学 ›› 2010, Vol. 31 ›› Issue (16): 176-179.doi: 10.7506/spkx1002-6630-201016037

• 分析检测 • 上一篇    下一篇

利用GC-MS检测辐照猪肉中挥发性碳氢化合物

马 涛1,2,林 琼1,3,王志东3,高美须3,李淑荣3,*,朱 捷3,周宏杰3   

  1. 1.沈阳农业大学食品学院 2.辽宁省农业科学院食品与加工研究所 3.中国农业科学院农产品加工研究所
  • 收稿日期:2009-10-19 修回日期:2010-05-14 出版日期:2010-08-25 发布日期:2010-12-29
  • 通讯作者: 李淑荣 E-mail:15802485784@139.COM
  • 基金资助:

    农业部公益性行业科技专项(200803034)

Identification of Radiated Pork by GC-MS Determination of Hydrocarbons

MA Tao1,2,LIN Qiong1,3,WANG Zhi-dong3,GAO Mei-xu3,LI Shu-rong3,*, ZHU Jie3,ZHOU Hong-jie3   

  1. 1. College of Food Science, Shenyang Agricultural University, Shenyang 110161, China;
    2. Institute of Agricultural Sciences and Technology, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China;
    3. Institute of Agri-food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2009-10-19 Revised:2010-05-14 Online:2010-08-25 Published:2010-12-29
  • Contact: LI Shu-rong E-mail:15802485784@139.COM

摘要:

为建立我国含脂食品辐照鉴定方法提供技术支持,以60Co-γ射线为辐照源,采用不同剂量(1、3、5、7kGy)辐照猪肉,对辐照后的猪肉进行索氏提取脂肪,固相萃取净化所提油脂,去除其中的色素和脂肪。氮气吹干碳氢化合物滤液,并用正己烷定容到1mL。用GC-MS 检测收集液中的挥发性碳氢化合物的种类和含量。结果表明:辐照后猪肉中的碳氢化合物的种类比辐照之前多了两种,它们分别为C16:2 和C17:1,而且它们的峰强度随着辐照剂量的增加而提高;另外,空白样品中各种脂肪酸含量的高低对碳氢化合物的含量也有影响。

关键词: 辐照, 猪肉, 挥发性碳氢化合物, 气相色谱- 质谱联用

Abstract:

In order to establish a method for identifying radiated pork based on differences in the contents of hydrocarbons, pork was radiated by 60Coγ ray at different dosages (1, 3, 5 kGy and 7 kGy) and radiated pork was analyzed for kinds and contents of volatile hydrocarbons in it by GC-MS based on a sample preparation procedure consisting of Soxhlet extraction, cleanup by solid-phase extraction for the removal of pigments and fat, nitrogen blowing evaporation to dryness and dilution in n-hexane to 1 mL. It was found that 60Coγ ray radiation resulted in the generation of two new compounds in pork, namely C16:2 and C17:1. and that their contents both increased with increasing radiation dosage. Moreover, after 60Coγ ray radiation at higher dosages, more hydrocarbons were found in pork with higher fatty acid contents.

Key words: radiation, pork, hydrocarbons, GC-MS

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