Protein Content of Lowland Non-glutinous Brown Rice from Hokkaido

[摘要] In the previous paper on protein content of lowland non-glutinous brown rice, it was shown that the values of 5 samples in 1968 and 2 samples in 1969 from Hokkaido were higher than the average values of 250 samples in 1968 and 97 samples in 1969 from all over the country. In order to know the protein level of lowland non-glutinous brown rice from Hokkaido, 925 samples of 51 varieties (grade No.2: 26 samples, grade No.3: 266 samples, grade No.4: 447 samples and grade No.5: 186 samples) in 1970 were collected and investigated. The ranges of the protein content of grade No.2-5 on dry weight basis were 8.15-10.55, 7.59-11.82, 7.28-11.45 and 7.28-12.17%, respectively. The average values on grade No.2-5 were 9.50, 9.25, 9.32 and 9.52%, respectively. The protein value from Hokkaido is significantly higher, from a statistical standpoint, than that from all over the country in 1968, 1969 and 1970 with regard to the same grade brown rice. On the other hand, it was indicated that the variety and the producing district had an effect upon the protein value.

[学科分类] 农业科学（综合）