食品科学 ›› 2012, Vol. 33 ›› Issue (18): 195-197.

• 分析检测 • 上一篇    下一篇

两种方法提取林蛙籽脂肪酸的气-质联用分析

李铁纯,侯冬岩,刁全平,孙 博,回瑞华   

  1. 鞍山师范学院化学系
  • 收稿日期:2011-06-25 修回日期:2012-07-18 出版日期:2012-09-25 发布日期:2012-09-07
  • 通讯作者: 回瑞华 E-mail:ruihuahui@163.com

Analysis of Fatty Acids in Rana chensinensis Eggs by Two Different Extraction Methods Combined with GC-MS

  • Received:2011-06-25 Revised:2012-07-18 Online:2012-09-25 Published:2012-09-07

摘要: 采用Bligh-Dyer提取法和Soxhlet提取法分别提取林蛙籽中的脂肪油,再进行甲酯化处理,利用气相色谱-质谱联用仪进行分析。Bligh-Dyer法提取的脂肪油中检测出27种脂肪酸,其中不饱和脂肪酸为16种,相对含量72.49%,二十碳四烯酸甲酯和二十碳五烯酸均为5.72%,二十二碳六烯酸为5.02%,亚油酸为8.89%,二十二碳六烯酸甲酯为5.72%。Soxhlet法提取的脂肪油中检测出12种脂肪酸,其中不饱和脂肪酸6种,相对含量64.86%,油酸为21.99%,亚油酸为7.58%,二十碳五烯酸为5.22%。

关键词: 林蛙籽, 脂肪酸, 气相色谱-质谱

Abstract: The egg oil of Rana chensinensis was extracted by Bligh-Dyer method or Soxhlet extraction method, methyl esterfied, and then analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 27 fatty acids were identified in the egg oil obtained by Bligh-Dyer method, including 16 unsaturated fatty acids (72.49%), such as arachidonic acid methyl ester (5.72%), eicosapentaenoic acid (5.72%), docosahexaenoic acid (5.02%), 9,12-octadecadienoic acid (8.89%), and 5,8,11,14-eicosatetraenoic acid (5.72%). Twelve fatty acids were identified by Soxhlet extraction method combined with GC-MS, comprising 6 unsaturated fatty acids (64.86%), such as 9-octadecenoic acid (21.99%), 5,8,11,14,17-eicosapentaenoic acid (7.58%) and 9,12-octadecadienoic acid (5.22%).

Key words: Rana chensinensis eggs, fatty acid, gas chromatography-mass spectrometry (GC-MS)