Rice starch retrogradation restrict the development of food industry. Rice starch is the major components of rice foods, the retrogradation and textural properties of rice foods are depended upon rice starch retrogradation. Up to now, a lot of works were focused on rice starch retrogradation at low and room temperature, however, the rertogradaion of rice starch precooling with low and ultra-low temperatures has not been studied in detail. Therefore, in this paper, these projects will be investigated:...