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当前位置: Formulaction > 资料中心 > 利用背散射光技术比较胶体对黑米牛乳的稳定效果

利用背散射光技术比较胶体对黑米牛乳的稳定效果

2014-07-16 10:57

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黑米牛乳粒径分布较纯牛乳体系发生明显变化,其中,黑米颗粒的粒径要远大于纯牛乳的粒径,粒径较大的黑米颗粒会导致整个体系更易发生沉淀现象。基于此,试验选用食品工业常规胶体结冷胶和MCC 来悬浮黑米颗粒,并以空白为对照,比较不同稳定剂对黑米牛乳稳定的效果。利用Malvern 粒度仪测定牛乳的粒径分布,以及利用Turbiscan 技术测定牛乳体系的稳定动力学参数SI和体系粒子沉淀速率,结果表明,添加有结冷胶的黑米牛乳和空白对照组的粒径分布基本相同, 而添加有MCC 的黑米牛乳的粒径分布却有显著改变,说明两者对体系稳定的机理不同,说明MCC 和结冷胶对沉淀现象都具有显著改善作用,但结冷胶对颗粒的悬浮能力较MCC 更强,更适合于黑米牛乳体系的悬浮。

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