湖北农业科学 ›› 2018, Vol. 57 ›› Issue (9): 97-99.doi: 10.14088/j.cnki.issn0439-8114.2018.09.023

• 检测分析 • 上一篇    下一篇

气相色谱法测定牛肉中的亚麻酸含量

席斌, 陈效威, 高雅琴, 李维红, 郭天芬, 杜天庆, 杨晓玲   

  1. 中国农业科学院兰州畜牧与兽药研究所/农业部畜产品质量安全风险评估实验室/农业部动物毛皮及制品质量监督检验测试中心,兰州 730050
  • 收稿日期:2017-12-27 出版日期:2018-05-10 发布日期:2019-12-23
  • 通讯作者: 高雅琴(1964-),女,研究员,主要从事畜产品质量评价研究工作,(电子信箱)13609312788@163.com。
  • 作者简介:席 斌(1981-),男,陕西商洛人,助理研究员,硕士,主要从事畜产品安全评估及相关研究工作,(电话)18919963236(电子信箱)xibin0707@163.com
  • 基金资助:
    国家农产品质量安全风险评估项目(GJFP201701514)

Determination of Linolenate in Beefs-Gas Chromatographic Method

XI Bin, CHEN Xiao-wei, GAO Ya-qin, LI Wei-hong, GUO Tian-fen, DU Tian-qing, YANG Xiao-ling   

  1. Lanzhou Institute of Animal Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Sciences/Quality Safety Risk Assessment of Animal Products (Lanzhou),Ministry of Agriculture/Quality Supervising,Inspection and Testing Center for Animal Fiber,Fur,Leather and Products,Ministry of Agriculture,Lanzhou 730050,China
  • Received:2017-12-27 Online:2018-05-10 Published:2019-12-23

摘要: 研究建立了肉制品中亚麻酸的气相色谱检测方法,样品经氢氧化钾-甲醇溶液甲酯化后用GC法分析,通过比对亚麻酸甲酯标准品气相色谱,其保留时间为26.212 min,采用外标法进行定量。结果表明,建立的牛肉中亚麻酸的分析方法在0.01~10.00 mg/mL线性关系良好,相关系数为0.999 95,日内、日间精密度范围分别为0.73%~1.08%和0.75%~1.01%,均小于15%,回收率为83.3%~95.79%,说明该方法灵敏度好、准确度高、线性好,可用于测定牛肉中的亚麻酸含量。

关键词: 气相色谱法(GC), 牛肉, 亚麻酸, 亚麻酸甲酯

Abstract: Linolenate was extracted with Isooctane from beefs,and methylified with KOH-CH3OH solution. Then content of methyl linolenate,which could be translated to the content of linolenate,was quantified with gas chromatographic. The retention time for methyl linolenate was 26.212 min. This method was appicable in a linear range of 0.01~10.00 mg/mL with the correlation coefficient at 0.999 95. The relative standard deviation(RSD) of intra-day and inter-day were 0.73%~1.08% and 0.75%~1.01%,which were less than 15%. The recovery rate was 83.3%~95.79%. The method gave high sensitivity,wide linearity,and specificity,which is suitable for determination of linolenate in beef.

Key words: gas chromatographic, beef, linolenate, methyl linolenate

中图分类号: