Investigation of preparation processing of cold-water-soluble cassava starch with mechanical activation

Employing a stirring-type ball mill and X-ray diffractometer,the preparation processing of cold-water-soluble cassava starch and the variation of cassava starch crystal structure in the process with mechanical activation were investigated.The results showed that the mechanically activated starch with solubility of 97.68% could be prepared under the following conditions: mechanical activating time-1.5 h,temperature-55 ℃,and stirring speed-415 r/min.The reasons of adopting an increased solubility are due to that the crystal structure of cassava starch could be destroyed by mechanical activation and the crystallinity decreased from polycrystalline to amorphous state.