食品科学

• 基础研究 • 上一篇    下一篇

食用胶对虾蛄中磷酸化肌原纤维蛋白凝胶特性的影响

王诗萌,张坤生*,任云霞   

  1. 天津商业大学生物技术与食品科学学院,天津市食品生物技术重点实验室,天津 300134
  • 出版日期:2016-05-15 发布日期:2016-05-18

Effect of Food Thickener on Gelation Properties of Squilla Myofibrillar Protein Induced by Phosphorylation

WANG Shimeng, ZHANG Kunsheng*, REN Yunxia   

  1. Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science,Tianjin University of Commerce, Tianjin 300134, China
  • Online:2016-05-15 Published:2016-05-18

摘要:

将魔芋胶、卡拉胶、黄原胶分别添加到虾蛄磷酸化肌原纤维蛋白中,在不同食用胶、三聚磷酸钠添加量及不同温度下形成凝胶,研究食用胶对磷酸化蛋白凝胶特性的影响。结果表明:随着三聚磷酸钠添加量的增加,3 种食用胶形成的蛋白凝胶强度和保水性均提高;随着食用胶添加量的增加,卡拉胶与黄原胶形成的蛋白凝胶强度和保水性提高,魔芋胶添加量为0.1%时,其蛋白凝胶强度最高;随着温度的升高,魔芋胶与卡拉胶均对蛋白凝胶强度和保水性有显著性影响(P<0.05),但黄原胶对凝胶强度和保水性无显著影响(P>0.05)。

关键词: 肌原纤维蛋白, 食用胶, 凝胶强度, 保水性

Abstract:

Konjac glucomannan, carrageenan and xanthan gum were individually mixed into a mixture of sodium
tripolyphosphate and squilla myofibrillar protein (STP-MP) to investigate their effects on heat-induced protein gelation
properties as a function of STP concentration and heating temperature. The results showed that the gel strength and waterholding
capacity of heat-induced MP gels with the addition of each of the above three food thickeners increased with
increasing concentration of STP. Gel strength and water-holding capacity were increased by the addition of carrageenan and
xanthan gum in a concentration-dependent manner, and the highest water-holding capacity was observed by the addition
of 0.1% konjac glucomannan. Gel strength and water-holding capacity of MP gels induced by elevated temperature were
significantly affected by the addition of konjac glucomannan and carrageenan (P < 0.05) but not xanthan gum (P > 0.05).

Key words: myofibrillar protein, food thickener, gel strength, water-holding capacity

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