In this work, a high shear mixer (HSM) is designed to produce a higher theoretical shear rate than conventional HSM in order to induce structure degradation of cassava starch granules. Using scanning electron microscopy and transmission electron microscopy, the processed cassava starch granule surface changes are identified without any major change in the granule shape. The carbohydrate component analysis and intrinsic viscosity suggest that the structural change is led by the removal of a relatively low‐molecular‐weight carbohydrate component from the granule. The changes in the crystalline and thermal properties are observed by the degradation process using a HSM. The process using a rotor speed of 15 000 rpm is found to significantly induce granule surface changes and carbohydrate removal. The decrease in granule crystallinity is correlated with an increase in the granule swelling power and solubility.

中文翻译：

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高剪切搅拌机诱导木薯淀粉颗粒的结构性质变化

在这项工作中，高剪切混合器（HSM）被设计为产生比常规HSM更高的理论剪切速率，以诱导木薯淀粉颗粒的结构降解。使用扫描电子显微镜和透射电子显微镜，可以识别出加工的木薯淀粉颗粒表面变化，而颗粒形状没有任何重大变化。碳水化合物成分的分析和特性粘度表明，结构变化是由从颗粒中除去相对低分子量的碳水化合物成分引起的。通过使用HSM的降解过程可以观察到晶体和热性能的变化。发现使用15000 rpm的转子速度的过程显着地引起颗粒表面变化和碳水化合物的去除。