1993 Volume 88 Issue 4 Pages 326-331
Contents of protein bodies (PB-I and PB-II) in polished rice (polishing ratio 70%) of various cultivars were determined by densitometry after sodium dodecylsulfate polyacrylamide gel electrophoresis (SDS-PAGE). Populations of PB-I and PB-II in total protein of polished rice were 23.6% and 61.7%, respectively, on the average of 120 samples (25 cultivars), and the ratio of PB-II/PB-I was 2.67. Suitable cultivars for sake brewing had a tendency to contain samller amount of PB-I and to have higher ratio of PB-IT/PB-I than ordinary commercial rice except Omachi. Gohyakumangoku from Ishikawa, Fukui, and Toyama Prefectures was similar in PB population as compared with the same cultivars from other districts in clsuter analysis. Akebono and Omachi contained large amount of PBI and were low in the ratio PB-II/PB-I. A specific protein band was recognized in SDS-PAGE of Koganemasari. Therefore, it is possible to distinguish it from other 24 cultivars.
