食品科学 ›› 2008, Vol. 29 ›› Issue (9): 211-214.

• 工艺技术 • 上一篇    下一篇

超临界CO2状态下氢化大豆浓缩磷脂的研究

 梁少华, 马传国, 王瑾, 李默馨, 于殿宇   

  1. 河南工业大学; 东北农业大学食品学院
  • 出版日期:2008-09-15 发布日期:2011-12-08

Study on Hydrogenation of Condensed Soybean Lecithin in Supercritical CO2 State

 LIANG  Shao-Hua, MA  Chuan-Guo, WANG  Jin, LI  Mo-Xin, YU  Dian-Yu   

  1. 1.Henan University of Technology,Zhengzhou 450001,China; 2. College of Food Science,Northeast Agricultural University,Harbin 150030,China
  • Online:2008-09-15 Published:2011-12-08

摘要: 在超临界CO2状态下,用Pd/C作催化剂,进行氢化大豆浓缩磷脂的加成反应。确定了高压反应釜中CO2的压力为5MPa,而后加入H2至总压力为9MPa时,二氯甲烷-乙醇混合溶剂比2:1,反应温度为65℃,反应时间为70min,搅拌速度为220r/min,催化剂添加量为3.5%,产品得率为92%,碘值为35.5gI2/100g的氢化浓缩磷脂。产品抗氧化性增强,呈颗粒状,颜色为淡黄色,有利于加工、运输、贮藏,改善了浓缩磷脂在饲料中的分散性。

关键词: 大豆浓缩磷脂, H2, 超临界CO2, 颗粒状, 抗氧化性

Abstract: Using Pd/C as catalyst,the hydrogenation of condensed soybean lecithin was carried out in the supercritical CO2 state. The optimal pressure of CO2 in the high-pressure reactor, total pressure after adding H2, ratio of dichloromethane to ethanol, reaction temperature, reaction time, stirring speed, amount of catalyst are determined, 5 MPa,9 MPa,2:1,65℃,70 minutes, 220 r/min and 3.5%, respectively. Under the above conditions the product yield is 92%, and iodine value of lecithin after hydrogenation is 35.5g I2/100g. The product is granular and yellowy. Its anti-oxidation is enhanced, which is benificial for processing, transportation and storage. The dispersion of condensed soybean lecithin in feed is also improved.

Key words: soybean lecithin, H2, supercritical CO2, granular, anti-oxidation