Study on the Technology of Inactivation Enzyme in Embryo-Remaining Rice by Microwave

Abstract:

Effect of microwave treatment on the inactivation of lipase in embryo-remaining rice was explored by single factor experiments and response surface methodology.The results showed that lipase was effectively inactivated by microwave radiation. The inactivation of lipase was affected by the initial moisture content of embryo-remaining rice，the dosage and time of microwave radiation，as well as the thickness of the samples. The effects of these four factors and their interactions were significant through the analysis of variance.The optimal conditions for inactivating lipase in embryo-remaining rice were：initial water content of 16%，microwave dosage of 2.0 kW/kg，microwave treatment time of 2.6 min and rice thickness of 3.3 cm. At these conditions，the inactivation rate of lipase in embryo-remaining rice was 68.12%. The effect of microwave treatment on themain measures of the embryo-remaining rice was not significant.