植物タンパク質利用に関する研究 : 大豆粕を特異的に分解する微生物の分離・同定及び分解物の肥料効果

概要

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Two microorganisms, which could degrade soybean-less efficiently, were isolated from nature and were identified as Bacillus circulans and B. stearothermophilus, respectively. These two strains secreted thermostable proteases in medium and could digest soybean-less completely at a high speed at 50℃. At first, the soybean-lees were degraded to proteins in approximately 20 hr by these two strains, after which the concentration of peptides were increased gradually in medium. The degraded products from soybean-less contained abundant nitrogen compounds such as peptides, amino acids, and amides. Approximately 10 times heavier plants (in the case of Brassica campestris) were harvested with applying these degraded products compared by applying water after 42 days. These fertile effects were almost equal to those of chemically synthesized fertilizer.
沼津工業高等専門学校の論文
1994-01-31