FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (7): 106-108.

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Effects of Thermal Denaturation and Aggregation on Solubility of Soy Protein Isolates

YE  Rong-Fei, YANG  Xiao-Quan, ZHENG  Tian-Yao, ZHENG  Heng-Guang, ZHU  Jian-Hua, LIU  Chong, SI  Hua-Jing   

  1. Research and Development Center of Food Proteins, College of Light Industry and Food, South China University of Technology, Guangzhou 510640, China
  • Online:2008-07-15 Published:2011-07-28

Abstract: The effects of tempetrature and concentration on the solubility of soy protein isolates (SPI) were studied, and then the subunit compositions and form of aggregation of soluble fractions obtained from treated SPI were analyzed by SDS-PAGE. The results showed that the totally denatured SPI after thermal treatment at low concentration have good solubility due to formation of heat-induced soluble protein aggregates.

Key words: soy protein isolates (SPI), thermal treatment, solubility, denaturation, aggregation