食品科学 ›› 2010, Vol. 31 ›› Issue (16): 253-257.doi: 10.7506/spkx1002-6630-201016056

• 分析检测 • 上一篇    下一篇

超临界-CO2 萃取燕麦麸油及其脂肪酸分析

韩舜愈1,2,宋雪梅2,祝 霞2,尚勋武1   

  1. 1. 甘肃省作物遗传改良与种质创新重点实验室
    2. 甘肃农业大学食品科学与工程学院
  • 收稿日期:2009-04-27 修回日期:2010-07-07 出版日期:2010-08-25 发布日期:2010-12-29
  • 通讯作者: 韩舜愈 E-mail:gsndhsy@163.com
  • 基金资助:

    甘肃省科技攻关项目(HS025-A41-003)

Supercritical Carbon Dioxide Extraction of Oat Bran Oil and Its Fatty Acid Composition

HAN Shun-yu1,2,SONG Xue-mei2,ZHU Xia2,SHANG Xun-wu1   

  1. 1. Gansu Key Laboratory of Crop Genetic & Germplasm Enhancement, Lanzhou 730070, China ;
    2. College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2009-04-27 Revised:2010-07-07 Online:2010-08-25 Published:2010-12-29
  • Contact: HAN Shun-yu1,2 E-mail:gsndhsy@163.com

摘要:

采用正交试验考察超临界CO2 萃取燕麦麸皮中燕麦油的最佳工艺技术参数,用GC-MS 分析燕麦麸油的脂肪酸组成。结果表明:CO2 超临界萃取的最佳工艺参数为压力15MPa、温度35℃、时间3h,所得燕麦麸油澄清透明,呈金黄色,具有特殊的麦香味。超临界CO2 萃取燕麦麸油中的脂肪酸主要有棕榈酸17.60% 、硬脂酸1.32%、油酸40.15%、亚油酸37.55%、亚麻酸1.89% 和反油酸1.52%;而石油醚萃取燕麦麸油中的脂肪酸主要有15.90%、1.67%、38.38 %、41.67%、1.63% 和1.32%。超临界CO2 萃取与石油醚萃取燕麦麸油中的总不饱和脂肪酸分别占81.11% 和83.00%。

关键词: 超临界萃取, 石油醚萃取, 燕麦麸油, 脂肪酸分析, GC-MS 分析

Abstract:

The optimal parameters for the supercritical carbon dioxide (SC-CO2 ) extraction of oat bran oil were determined by orthogonal array design to be: extraction pressure 15 MPa, extraction temperature 35 ℃ and length of extraction 3 hours. The oat bran oil obtained was clear and of golden color and had the characteristic smell of oat. Its fatty acid composition and that of petroleum ether extraction-derived oat bran oil were analyzed by gas chromatography-mass spectrometry (GC-MS), and the results revealed that the major fatty acids found in SC-CO2 extraction-derived oat bran oil were palmitic acid (17.60%), stearic acid (1.32%), oleic acid (40.15%), linoleic acid (37.55%), linolenic acid (1.89%) and elaidic acid (1.52%) and that these compounds in its petroleum ether extraction-derived counterpart were 15.90%, 1.67%, 38.38%, 41.67%, 1.63%, and 1.32%, respectively. The total contents of unsaturated fatty acids in SC-CO2 extraction-derived oat bran oil and its petroleum ether extraction-derived counterpart were 81.11% and 83.00%, respectively.

Key words: supercritical fluid extraction, petroleum ether extraction, oat bran oil, fatty acid composition, GC-MS

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