食品科学

• 工艺技术 • 上一篇    下一篇

太平洋磷虾油的亚临界R134a萃取工艺及脂肪酸成分分析

刘 坤,王 兰,薛长湖,韩玉谦   

  1. 中国海洋大学食品科学与工程学院,山东 青岛 266003
  • 出版日期:2013-07-25 发布日期:2013-08-02

Subcritical R134a Extraction of Euphausia pacifica Oil and Analysis of Fatty Acid Composition

LIU Kun,WANG Lan,XUE Chang-hu,HAN Yu-qian   

  1. College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
  • Online:2013-07-25 Published:2013-08-02

摘要:

研究亚临界R134a萃取太平洋磷虾油的萃取工艺,探讨萃取压力、萃取温度及动态萃取时间对磷虾油得率的影响,并采用气相色谱-质谱(GC-MS)联用技术对所萃取的磷虾油进行分析。结果表明:适宜萃取工艺条件为萃取压力12MPa、萃取温度30℃、动态萃取时间40min,在此工艺条件下,太平洋磷虾油得率为6.69%。通过GC-MS分析,太平洋磷虾油中含有20种脂肪酸,不饱和脂肪酸含量为62.35%,其中二十碳五烯酸(EPA)与二十二碳六烯酸(DHA)占总脂肪酸含量的21.82%。

关键词: 亚临界R134a, 太平洋磷虾, 脂肪酸, 气相色谱-质谱法

Abstract:

The extraction of krill oil from Euphausia pacifica by subcritical 1,1,1,2-tetrafluoroethane (R134a) was
studied and the extracted oil was then analyzed by GC-MS. The effects of three extraction parameters including pressure,
temperature and dynamic extraction time on the yield of krill oil were explored. The maximum extraction yield of krill oil
was 6.69% at the optimal extraction conditions as follows: 12 MPa, 30 ℃ and 40-min dynamic extraction time. Twenty fatty
acids including EPA and DHA were identified from the oil. The total yield of unsaturated fatty acids was as high as 62.35%,
and the total yield of EPA and DHA was 21.82%.

Key words: subcritical R134a, Euphausia pacifica, fatty acid, gas chromatography-mass spectrometry (GC-MS)