Abstract
Lipid oxidation is one of the important factors affecting the quality of α-instant rice. In this study, α- instant rice was detected with hydrogen peroxide value (POV), malondialdehyde value (MDA) and fatty acid value (FAV), colorimeter, electronic nose and HS-SPME GC/MS before and after storage. As well as, the effect of catalase treatment on the quality of α-instant rice during storage was investigated The results showed that the content of MDA in α-instant rice decreased by 41.4% in the late stage of the accelerated storage test (21 days), which was 4.3% lower than that of α-instant rice treated with BHT. At the same time, catalase had more advantages in maintaining the whiteness and aroma of α-instant rice, and inhibiting the aldehydes, ketones, hydrocarbons and various volatile odor substances produced by lipid oxidation of α-instant rice. Therefore, catalase, as a natural substitute for synthetic antioxidants, has great potential in the antioxidation of convenience foods.
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