食品科学 ›› 2011, Vol. 32 ›› Issue (6 ): 53-56.doi: 10.7506/spkx1002-6630-201106012

• 工艺技术 • 上一篇    下一篇

沙葱籽油的超临界CO2萃取及其成分分析

张君萍1,2,侯喜林1,2,*,董海艳1,2,俞 阗1,马志虎1,2   

  1. 1.南京农业大学 作物遗传与种质创新国家重点实验室 2.农业部南方蔬菜遗传改良重点开放实验室
  • 收稿日期:2010-06-18 修回日期:2011-01-26 出版日期:2011-03-25 发布日期:2011-03-03
  • 通讯作者: 侯喜林 E-mail:hxl@njau.edu.cn
  • 基金资助:
    国家公益性行业(农业)科研专项(200903018)

Supercritical Fluid CO2 Extraction and Composition Analysis of Allium mongolicum Seed Oil

ZHANG Jun-ping1,2,HOU Xi-lin1,2,*,DONG Hai-yan1,2,YU Tian1,MA Zhi-hu1,2   

  1. 1. State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China;
    2. Key Laboratory of Southern Vegetable Crop Genetic Improvemen, Ministry of Agriculture, Nanjing 210095, China
  • Received:2010-06-18 Revised:2011-01-26 Online:2011-03-25 Published:2011-03-03
  • Contact: HOU Xi-lin1, E-mail:hxl@njau.edu.cn

摘要: 以野生沙葱种子为原料,利用超临界CO2流体萃取沙葱籽油。在单因素试验基础上,采用正交试验设计,考察压力、温度、萃取时间、CO2流量4因素对沙葱籽油萃取率的影响。研究得出最佳萃取条件为压力35MPa、温度45℃、萃取时间120min、CO2流量35kg/h,在此条件下油脂萃取率为15.00%。利用GC-MS对沙葱籽油分析,发现沙葱籽油中不饱和脂肪酸主要为亚油酸(63.24%)和油酸(15.99%),占脂肪酸总量的86.65%;饱和脂肪酸以棕榈酸(7.93%)为主,占脂肪酸总量的13.35%。用常规方法对沙葱籽油的理化性质进行测定,结果表明超临界CO2流体萃取法得到的沙葱籽油各项理化指标均良好,产物纯度高、品质好。

关键词: 理化性质, 超临界CO2流体萃取, 沙葱籽油, 气相色谱-质谱分析

Abstract: Supercritical fluid CO2 extraction was applied to extract oil from Allium mongolicum seeds. Based on single factor experiments, the effects of extraction pressure, extraction temperature, extraction time and CO2 flow rate on extraction rate of Allium mongolicum seed oil were explored by orthogonal design. The results indicated that the optimal extraction conditions were extraction pressure of 35 MPa, extraction temperature of 45 ℃, extraction time of 120 min and CO2 flow rate of 35 kg/h. Under the optimal extraction conditions, the extraction rate of Allium mongolicum seed oil was 15.00%. GC-MS analysis showed that fatty acids in Allium mongolicum seed oil were composed of 86.65% unsaturated fatty acids and 13.35% saturated fatty acids. Furthermore, linoleic acid (63.24%), oleic acid (15.99%) and palmitic acid (7.93%) were major fatty acids in Allium mongolicum seed oil. Therefore, supercritical fluid CO2 extraction can provide excellent physico-chemical properties, high purity and quality for Allium mongolicum seed oil.

Key words: supercritical fluid CO2 extraction, Allium mongolicum seed oil, GC-MS, physico-chemical property

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