摘要：研究了籼米淀粉超微粉体的一种新的制备方法 ,通过正交实验确定了酶处理淀粉的最佳条件 ,考察了淀粉的溶解度和膨润力。结果表明 ,酶处理淀粉的最佳工艺参数为 :水解温度４５℃ ,时间为２５ｈ ,酶用量为水解淀粉的４５%。随着粒径的减小 ,淀粉的溶解度增大 ,膨润力下降。

关键词： 淀粉;复合酶;超微粉体

Abstract:The superfine powder of long-rice starch is prepared by a new method．The optimal conditions for starch treatment with ferment are determined by orthogonal experiments the effects of various materials on superfine grinding are discussed and the solubility and the expandibility of the starch are researched．The results show that the optimal conditions for starch treatment with ferment are the temperature of hydrolysis is45℃ the time is25h the amount of ferment is 45％ of starch．When the particle size of starch decreases its solubility improves and the expandibi lity comes down．

Keywords:starch；complex-enzyme；superfine powder