Abstract:The non-waxy corn starch were processed by ozone oxidized methods，and the thermal properties and retrogradation properties of non-waxy corn starch were investigated by differential scanning calorimeter（DSC），respectively.Results showed that the ozone oxidation treatment would change the thermal properties of non-waxy corn starch.Gelatinization temperature，peak temperature and gelatinization enthalpy change would increase with the increase of oxidation time，but the enthalpy change value increased first and then decreased with the increase of oxidation time.；during the storage at 4℃，the trend of the retrograded melting point and peak temperature of the transformed starch was similar to that of the original starch，but the retrograded enthalpy change value was slightly higher than that of the original starch.Therefore，the thermal properties and retrogradation properties of non-waxy corn starch particles could be effectively changed by the ozone oxidation process.