马铃薯蛋白-黄原胶复合物的制备及微流变特性Preparation and Microrheological Properties of Potato Protein-Xanthan Gum Complex
冀越,刘洋,李帅浩,魏佳怡,王雨,张艳艳,刘兴丽
摘要(Abstract):
以马铃薯蛋白和黄原胶为原料制备复合物,研究了3种状态下马铃薯蛋白-黄原胶复合物的粒径、电位、二级结构、微流变特性、微观结构等的变化。结果表明,在相分离状态下,粒径最大,电位、表面疏水性最小,这可能是因为静电相互作用增强,形成了较大的聚集体,出现了分子间自聚集;复合物由互溶到相分离的过程中,β-折叠逐渐增大,而β-转角逐渐减小,α-螺旋与无规则卷曲基本稳定,说明蛋白质结构由松散向紧密结构转化。微流变特性分析表明复合物在相分离状态下的宏观黏度因子值最高,黏度最大,粒子运动速度减慢,乳液液滴间具有强作用力,体系更稳定。该研究为马铃薯蛋白的深入研究和产品开发提供了一定参考,提高了马铃薯蛋白的利用率,扩大了其应用范围。
关键词(KeyWords): 马铃薯蛋白;复合物;聚集;微流变
基金项目(Foundation): 河南省科技攻关项目(252102110117);; 河南省大学生创新创业训练计划项目(202310462040)
作者(Author): 冀越,刘洋,李帅浩,魏佳怡,王雨,张艳艳,刘兴丽
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