Prolamin was defined by Osborne1* as a protein soluble in alcohol.Aqueous ethanol (60 and 70%) is often used to extract prolamin from various grains.In addition, the extraction of prolamin using other organic solvents has been reported; 55% isopropanol for barley2)3) and maize,4) and 60% ter/-butanol for pearl millet5) and proso millet.6)However,the extraction of rice prolamin with alcohols other than ethanol has not been reported.The purpose of this study was to find an effective solvent for extracting prolamin from the rice endosperm.Aqueous «-propanol was found to be the most effective among several alcohols.Polished rice (Oryza sativa L. Japonica cv.Koshi-
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Sugimoto et al. (1986) studied this question.