Abstract: The retrogradation kinetics properties of rice starch pastes from three rice types,i.e.indica rice,japonica rice and glutinous rice were studied separately by using a rotary rheometer.Results indicated that the retrogradation of starch pastes approached to the first order chemical reation model with the reaction order higher than isilightly.The retrogradation kinetics properties of starch paste could be described well by rheological index.The retrogradation was related to the properties of both continuous phase and disperse phase.The precision of equation was the highest when the parameters of rheological index of continuous phase and the sedimentation ratio of dosperse phase were introduced to the model,The interaction of anylose and amylopectin led to the increase of retrogradation.

Key words: Rice, Starch paste , Retrogradation , Kinetics