食品科学 ›› 2005, Vol. 26 ›› Issue (2): 169-171.

• 基础研究 • 上一篇    下一篇

毛细管气相色谱法测定焦糖色素中的4-甲基咪唑

 郭小莉, 陈敏, 张世湘, 胡锦蓉   

  1. 中国农业大学食品科学与营养工程学院
  • 出版日期:2005-02-15 发布日期:2011-09-19

Determination of 4-Methylimidazole in Caramel Color by Capillary Gas Chromatography

 GUO  Xiao-Li, CHEN  Min, ZHANG  Shi-Xiang, HU  Jin-Rong   

  1. College of Food Science and Nutritional Engineering, China Agriculture University
  • Online:2005-02-15 Published:2011-09-19

摘要: 研究了焦糖色素中4-甲基咪唑含量的气相色谱分析方法。样品在层析柱中用二氯甲烷洗脱,洗脱液浓缩直接进行气相色谱分析。采用HP-5毛细管柱分离样品,NP检测器测定4-甲基咪唑的含量。方法的线性范围为0.025~0.3mg/L;最低检测浓度为0.01mg/L;加样平均回收率为92.5%~99.0%;相对标准偏差为0.6%~1.1%。结果表明:该方法具有操作简便、快速、准确等优点。

关键词: 毛细管气相色谱法, 4-甲基咪唑, 焦糖色素

Abstract: A method for the determination of 4-methylimidazole in caramel color by capillary gas chromatography was studied. The method consisted of a methylene chloride extraction of the sample, followed by concentration and GC analysis of the eluate. The GC analysis was carried out by using HP-5 capillary column(30m×0.32mm×0.25μm film)and nitrogen phosphorus detector. The linear range was 0.025~0.3mg/L and the limit of detection was 0.01mg/L. The average recoveries were 92.5%~ 99.0% and its relative standard deviations were 0.6%~1.1%. The method was simple, rapid and sensitive.

Key words: capillary gas chromatography, 4-methylimidazole, caramel color