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中国精品科技期刊2020

碱溶热处理对大豆分离蛋白溶解度、热聚集和流变性质的影响

简华君, 张海瑞, 黄小林, 陈洁

简华君, 张海瑞, 黄小林, 陈洁. 碱溶热处理对大豆分离蛋白溶解度、热聚集和流变性质的影响[J]. 食品工业科技, 2014, (16): 101-104. DOI: 10.13386/j.issn1002-0306.2014.16.013
引用本文: 简华君, 张海瑞, 黄小林, 陈洁. 碱溶热处理对大豆分离蛋白溶解度、热聚集和流变性质的影响[J]. 食品工业科技, 2014, (16): 101-104. DOI: 10.13386/j.issn1002-0306.2014.16.013
JIAN Hua-jun, ZHANG Hai-rui, HUANG Xiao-lin, CHEN Jie. Effects of alkaline-heating treatment on the solubility, thermal aggregation and rheological property of soybean protein isolate[J]. Science and Technology of Food Industry, 2014, (16): 101-104. DOI: 10.13386/j.issn1002-0306.2014.16.013
Citation: JIAN Hua-jun, ZHANG Hai-rui, HUANG Xiao-lin, CHEN Jie. Effects of alkaline-heating treatment on the solubility, thermal aggregation and rheological property of soybean protein isolate[J]. Science and Technology of Food Industry, 2014, (16): 101-104. DOI: 10.13386/j.issn1002-0306.2014.16.013

碱溶热处理对大豆分离蛋白溶解度、热聚集和流变性质的影响

基金项目: 

国家863计划(2013AA102204); 中央高校基本科研业务费专项资金项目(JUSRP21108); 江南大学博士研究生科学研究基金项目;

详细信息
    作者简介:

    简华君 (1985-) , 女, 博士, 研究方向:食品加工与组分变化。;

  • 中图分类号: TS201.2

Effects of alkaline-heating treatment on the solubility, thermal aggregation and rheological property of soybean protein isolate

  • 摘要: 以大豆低温脱脂豆粕为原料提取大豆分离蛋白(SPI),在传统碱溶酸沉法制备SPI的碱溶阶段采用不同程度的热处理(25、50、60、70、80℃),研究了碱溶热处理对SPI溶解度、热聚集和流变性质的影响。其结果表明,碱溶热处理破坏了SPI的溶解度,可溶性部分含有大量由二硫键结合的大分子聚集体。碱溶热处理能提高蛋白弹性模量的同时降低凝胶点温度。适当的碱溶热处理(60℃)不仅能保留较好的蛋白溶解度,还能获得最佳的凝胶弹性。 
    Abstract: Soybean protein isolate (SPI) was prepared from low-heat defatted soy flour, and preheated during alkaline extraction. The effects of alkaline-heating treatment (25, 50, 60, 70 and 80℃) on the solubility, thermal aggregation and rheological property of SPI were studied. The results showed that alkaline-heating treatment destroyed the protein solubility. The soluble portion of SPI samples contained a large number of aggregates which were mainly cross-linked by disulfide bonds. The alkaline-heating treatment could significantly improve the elastic modulus but decrease the gel point temperature of SPI samples. Alkaline-heating at 60℃ was proved to maintain a relatively fine solubility and exhibit the best elasticity of SPI.
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  • 收稿日期:  2013-11-10

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