Protein Quality of High-yielding Rice and Its Improvement by Supplementation of Lysine and Threonine(Food & Nutrition)

概要

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The protein quality of hybridized high-grain yielding varieties, between japonica and indica type rites, Chugoku 91, Nanjing 11 and Milyang 30, was examined. The contents of protein and amino acids of Nanjing 11, especially lysine, were highest among these three varieties. The food intake, weight gain and feed efficiency of rats given a Nanjing 11 diet also showed the highest values among these three varieties. The supplementation of lysine and threonine to a Milyang 30 diet brought about increases of 11, 44 and 30% in the food intake, weight gain and feed efficiency, together with 20 and 25% increases in the biological value and net protein utilization, as compared with those in rats that received the Milyang 30 alone as the protein source. These results suggested that it is possible to select a variety for concomitant increases in grain yield and protein with good quality, and showed that the supplementation of lysine and threonine to this variety can bring about economically significant improvement of the biological quality.
社団法人日本農芸化学会の論文
1990-02-23