食品科学 ›› 2008, Vol. 29 ›› Issue (2): 142-144.

• 基础研究 • 上一篇    下一篇

液相体系制备大豆酸沉蛋白-葡聚糖共价复合物及其反应机制(Ⅱ)反应机制的理论分析

 齐军茹, 杨晓泉, 廖劲松   

  1. 华南理工大学食物蛋白工程研究中心; 华南师范大学生命科学学院 广东广州510640; 广东广州510640; 广东广州510631;
  • 出版日期:2008-02-15 发布日期:2011-08-24

Preparation and Theoretical Analysis of Soy Acid Protein-Polysaccharide Conjugates Obtained in Liquid System (Ⅱ) Forming Mechanism of Soy Acid Protein-polysaccharide Conjugates

 QI  Jun-Ru, YANG  Xiao-Quan, LIAO  Jin-Song   

  1. 1.Food Protein Engineering Research Center, South China University of Technology, Guangzhou 510640, China;2.College of Life Science, South China Normal University, Guangzhou 510631, China
  • Online:2008-02-15 Published:2011-08-24

摘要: 采用凝胶过滤色谱和红外光谱(FT-IR)分析了反应前后蛋白与多糖Maillard反应产物分子结构特征,证实反应后SAPP与葡聚糖产生了共价结合;并通过凝胶渗透色谱(GPC)技术对干热反应后所得共价复合物的分子量分布进行分析,结果表明液相体系所得蛋白-多糖共价复合物与干热法所得产物的数均分子量和重均分子量非常相近。

关键词: 共价复合物, 大豆酸沉蛋白, 乳化活性, Maillard反应, 凝胶渗透色谱

Abstract: The molecular structure features of SAPP and its conjugated with dextran were analyzed through the gel filtration chromatography(GPC), UV and IR-spectrums. The covalent attachment of polysaccharides to protein was confirmed. Through the GPC investigation, it showed that products obtained in liquid system have the same absorbing characteristics as UV and IR. GPC analysis results showed that the Mn and Mw were similar conjugates obtained in both 80% ethanol reacting system and dry-heating condition.

Key words: conjugate, SAPP(soy acid protein-polysaccharide), emulsifying properties, Maillard reaction, GPC(gel permeation chromatography)