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大豆科学  2013 

三种市售大豆蛋白产品理化特性研究

DOI: 10.3969/j.issn.1000-9841.2013.01.020, PP. 84-92

Keywords: 低温脱脂大豆粉,大豆浓缩蛋白,大豆分离蛋白,大豆蛋白商品,理化特性

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Abstract:

以市售33份大豆蛋白产品为材料,其中包括10份低温脱脂大豆粕,10份大豆浓缩蛋白和13份大豆分离蛋白。通过聚类分析和多重比较研究其粗蛋白含量、粗脂肪含量、粗纤维含量、灰分含量、氮溶解指数、凝胶硬度和乳化性等理化特性。结果表明:大豆蛋白产品的理化特性之间存在差异,其中粗脂肪含量、粗纤维含量和凝胶硬度差异较大(CV>10%),粗蛋白含量差异较小(CV<10%)。有10%的低温脱脂大豆粉符合GB/T13382-2008对灰分的要求,有80%的低温脱脂大豆粉符合GB/T13382-1992对氮溶解指数的要求;100%的浓缩蛋白符合GB/T20371-2006的要求;有76.9%的分离蛋白符合GB/T20371-2006对粗纤维含量的要求。三种大豆蛋白产品间主要差异为氮溶解指数和凝胶硬度。

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