Study on the physicochemical properties of acetate starch from mechanical activation cassava starch

Cassava starch was mechanically activated by a stirring -type ball mill. Acetylated starch was synthesized from cassava starch with activation time for 1 hour and native starch. Effect on mechanical activation on the physicochemical properties of acetate cassava starch was comparatively studied. The results indicated that the paste clarity and solubility of acetate starch from mechanical activation cassava starch increased dramatically. It also showed higher stability of freeze thaw, lower retrogradation, lower moisture absorption performance, higher viscosity and better viscosity stability of hot starch paste. Mechanical activation effectively improve the physicochemical properties of acetate cassava starch, due to that the crystal structure of cassava starch was destroyed by mechanical activation, the crystallinity is decreased.