采用表面活性剂结合超声波法分离淀粉

采用表面活性剂结合超声波法分离大米淀粉和蛋白,研究发现SDS添加量、超声波时间高度显著影响分离效果,并发现三次分离工艺有利于提高淀粉的纯度,最佳工艺条件为:SDS添加量为2.5%,液固比为7∶1,超声波时间为50min,将蛋白含量降低到0.49%,淀粉回收率为73.61%,并用SEM和Viscograph-E型布拉班德连续粘度仪测定分离得到淀粉的性质。

This work is about application of ultrasound and surfactants in rice starch and protein isolation. The SDS dosage and the ultrasound treatment time are high influencing factors for the isolation, Three times＇ isolation improved the purity of starch. The optimum conditions are： 2.5% of SDS, 50min of the ultrasound treatment, 7：1 of the liquid-solid ratio, The final starch product contained 0.49% of protein, and the yield was 73.16%, and the SEM and Viscograph-E were used to study the isolated rice starch.