食品科学 ›› 2011, Vol. 32 ›› Issue (14): 289-292.doi: 10.7506/spkx1002-6630-201114063

• 分析检测 • 上一篇    下一篇

两种提取方法对小米谷糠油中营养成分的影响

赵陈勇,王常青*,许 洁,樊 迎,王 菲   

  1. 山西大学生命科学学院食品科学与工程系
  • 出版日期:2011-07-25 发布日期:2011-06-18

Effects of Extraction Methods on Nutritional Components in Millet Bran Oil

ZHAO Chen-yong,WANG Chang-qing*,XU Jie,FAN Ying,WANG Fei   

  1. (Department of Food Science and Technology, College of Life Science, Shanxi University, Taiyuan 030006, China)
  • Online:2011-07-25 Published:2011-06-18

摘要: 采用CO2超临界萃取法(supercritical carbon dioxide extraction,SCDE)和异丙醇溶剂法(isopropanol solvent extraction,ISE)萃取小米谷糠油,并用气相色谱仪和荧光分光光度计对其中的脂肪酸组成、VE、总甾醇、磷脂含量和色泽进行分析。结果表明:小米谷糠油中亚油酸的含量远远高于其他食用植物油,达到71.82%。SCDE法提取的小米谷糠油与ISE法相比,前者的不饱和脂肪酸含量比后者下降了0.11%,而C14至C22饱和脂肪酸升高0.93%;SCDE法的VE和甾醇含量分别比ISE法高20.64%和34.82%;磷脂含量下降99.60%,并且色泽较浅。

关键词: CO2超临界, 异丙醇, 脂肪酸, VE, 甾醇, 磷脂

Abstract: Supercritical carbon dioxide extraction (SCDE) and isopropanol solvent extraction (ISE) were employed to extract millet bran oil. The fatty acid composition and the contents of sterol, vitamin E and phospholipid as well as the color change of the obtained samples were determined by gas chromatography and fluorescence spectrometry. The results showed that the content of linoleic acid in millet bran oil was even higher than other edible oils, which was up to 71.82%. The contents of unsaturated fatty acids and phospholipid in SCDE-derived millet bran oil exhibited a decrease by 0.11% and 99.60% respectively when compared with ISE-derived millet bran oil, but the contents of saturated fatty acids of C14-C22, vitamin E and sterol were higher than those of ISE, which were up to 0.93%, 20.64% and 34.82%, respectively. Moreover, SCDE-derived millet bran oil revealed a lighter color.

Key words: supercritical carbon dioxide, isopropanol, fatty acid, vitamin E, sterol content, phospholipid, color

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