Development of rapid polishing method for brewer's rice and evaluation of polished rice properties
2002
"Kobayashi, K. (Niigata-ken. Agricultural Experiment Station, Nagaoka (Japan))."
"Using a small-type rice miller, Pearlest, equipped with barley polishing parts, brown rice could be simply and rapidly polished up to the targeted polishing ratio of 70%. This method was characterized by a low ratio of broken rice, reduction of the loss of moisture content of the samples, and more spherical polishing of rice kernels. Twenty-minute water absorption was clearly enhanced in varieties such as Ipponjime with kernels showing a low hardness, and the nitrogen content was lower compared with the control method. But these ten-dencies were not considered to hinder the evaluation of relative varietal differences, because it was found that the nitrogen content and 20-minute water absorption ratio of polished rice by this method could be utilized as stable evaluation parameters revealing the intrinsic characteristics of the varieties. Development of this rapid polishing method is considered to be extremely important for efficient selection in breeding programs for brewer's rice, because it may be possible to evaluate the nitrogen content of 70%-polished rice and water absorption properties which had not been examined so far in earlier generations."
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