Evaluation and Analysis of Parboiled Rice before and after Preparation Based on Quality Characteristics and Gelatinization Properties

In this study, 12 rice varieties were selected to prepare the parboiled rice under the same process conditions. The change trend of quality characteristics and gelatinization properties of parboiled rice before and after preparation were comprehensively evaluated and analyzed. The results showed that the milling quality in the parboiled rice of ‘Yuzhenxiang’, ‘Tianfeng B’, ‘SN16-236’, ‘Guifengyou 785’, ‘Liangyou68’, ‘Huiliangyou 1898’ were better than that before preparation. Because of the yellow grain of parboiled rice of ‘SN16-236’, ‘Liangyou68’, ‘Huiliangyou 1898’ were relatively higher than the raw rice (P < 0.05), which seriously affected the appearance quality of parboiled rice. It was also found that parboiled rice could improve the nutrition and the thermal stability of rice paste. In addition, the results of taste quality analysis showed that the appearance and taste values of parboiled rice of ‘Yuzhenxiang’, ‘Hongxiang Rice’, ‘Jinyuanxiang 98’, ‘SN16-236’, ‘15L-Z156’, ‘Guifengyou 785’ were all higher than those before preparation. Based on the above results, the quality in the parboiled rice of ‘Yuzhenxiang’, ‘Guifengyou 785’ were better and suitable for use as special rice varieties of parboiled rice, but the quality of ‘Dalixiang’ and ‘Yuefeng B’ were relatively poor and were not suitable for the production of parboiled rice. This study would provide the theoretical basis for the quality evaluation of parboiled rice and the development and application of rice products.