食品科学 ›› 2010, Vol. 31 ›› Issue (1): 102-104.doi: 10.7506/spkx1002-6630-201001024

• 基础研究 • 上一篇    下一篇

热处理对大豆分离蛋白可食性膜性能和结构的影响

马 丹1,2,张 超1,马 越1,赵晓燕1,*,岳喜庆2,雷安亮2   

  1. 1.北京市农林科学院蔬菜研究中心 2.沈阳农业大学食品学院
  • 收稿日期:2009-02-27 出版日期:2010-01-01 发布日期:2014-05-19
  • 通讯作者: 赵晓燕 E-mail:zhaoxiaoyan@nercv.org

Effect of Thermal Treatment on Mechanical and Barrier Properties and Structure of Soy Protein-isolate Edible Films

MA Dan1,2,ZHANG Chao1,MA Yue1,ZHAO Xiao-yan1,*,YUE Xi-qing2,LEI An-liang2   

  1. (1. Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;
    2. College of Food Science and Technology, Shenyang Agricultural University, Shenyang 100161, China)
  • Received:2009-02-27 Online:2010-01-01 Published:2014-05-19
  • Contact: ZHAO Xiao-yan1,*, E-mail:zhaoxiaoyan@nercv.org

摘要:

研究热处理对大豆分离蛋白膜性能和结构的影响,90℃热处理后制得的大豆分离蛋白膜呈现出最佳机械性能和阻隔性能。同时研究热处理后蛋白的结构变化,包括二硫键数量、疏水值和二级结构。结果显示:二硫键和α- 螺旋含量与膜机械和阻隔性能呈现正相关性,而疏水值与膜机械和阻隔性能呈现负相关性。

关键词: 大豆分离蛋白, 可食性膜, 热处理, 二硫键, 疏水值

Abstract:

With the aim of revealing the differences in mechanical and barrier properties and protein structure of soy proteinisolate edible films produced at different thermal treatment temperatures and correlation between them, this study was conducted. Films produced at 90 ℃ showed the best mechanical and barrier properties. The difference in protein structure was evaluated in terms of disulfide bond content, hydrophobic value and main secondary structures including alpha-helix and beta-sheet. It was demonstrated that disulfide bond content and alpha-helix presented a positive correlation with mechanical and barrier properties of the films, which were negatively correlated with hydrophobic value.

Key words: soy protein isolate, edible film, thermal treatment, disulfide bond, hydrophobic value

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