食品科学 ›› 2009, Vol. 30 ›› Issue (5): 76-78.doi: 10.7506/spkx1002-6630-200905016

• 专家约稿 • 上一篇    下一篇

大豆分离蛋白对微生物转谷氨胺酶诱导鲢鱼糜凝胶形成的影响

刘海梅   

  1. 鲁东大学食品工程学院
  • 收稿日期:2008-05-10 修回日期:2008-08-15 出版日期:2009-03-01 发布日期:2010-12-29
  • 通讯作者: 刘海梅 E-mail:hellen_79@yahoo.cn
  • 基金资助:

    “十一五”国家科技支撑计划项目(2006BAD05A18);鲁东大学科研基金项目(LY20076201)

Effect of Soy Protein Isolate on Microbial Tranglutaminase-induced Gel Formation of Silver Carp Surimi

LIU Hai-mei   

  1. (College of Application Technology, Ludong University, Yantai 264025, China)
  • Received:2008-05-10 Revised:2008-08-15 Online:2009-03-01 Published:2010-12-29
  • Contact: LIU Hai-mei E-mail:hellen_79@yahoo.cn

摘要:

本实验通过对鲢鱼糜凝胶特性和溶解率的测定及SDS-PAGE、扫描电镜观察,研究大豆分离蛋白(SPI)对微生物转谷氨酰胺酶(MTGase)诱导鱼糜凝胶形成的影响及作用机理。结果表明:SPI 和MTGase 均能显著提高鱼糜凝胶特性,但SPI 的添加会阻碍MTGase 对肌球蛋白重链(MHC)的交联,降低鱼糜凝胶特性,增加溶解率。SPI改善鲢鱼糜凝胶特性的机理是自身的凝胶作用和抑制蛋白酶活性。

关键词: 大豆分离蛋白, 转谷氨酰胺酶, 鱼糜凝胶

Abstract:

Through the determination of surimi gel properties and solubility, this study aimed to investigate the effect of soy protein isolate (SPI) on the formation of microbial tranglutaminase (MTGase)-induced silver carp surimi gel and understand the mechanism using SDS-PAGE and SEM. The results showed that both of SPI and MTGase significantly increase surimi gel properties, but the addition of SPI may inhibit myosin heavy chain (MHC) cross-linking induced by MTGase and enhance the solubility of surimi gel. The mechanism of SPI improving surimi gel properties may result from its inhibition against protease activity and own gelation.

Key words: soy protein isolate (SPI), tranglutaminase (TGase), surimi gel

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