屎尿の消化処理に関する研究 (第8報) : 屎尿好気性消化の種汚泥より分離された Streptococcus sp. の性状

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During the aerobic digestion of night soil to which was added 20 per cent by volume of seed sludge, Streptococcus sp. were grown almost exclusively as the predominant bacteria. Some characters of Streptococcus sp. investigated were as follows.The temperature range of growth was between 20°〜27℃, and the optimum was at 30℃. Growth could occur at pH 7.0〜9.6. This organisms did not utilized carbohydrates and sugar alcohols, but utilized some organic volatile acids, especially acetic and butryric acids as carbon sources. The growth on the synthetic medium was markedly stimulated by the addition of trace amounts of yeast extract and night soil filtrate. As to the the oxidation and assimilation of volatile acids by this organisms, acetic and was most adequate substrate. Also, butyric valeric acids were oxidized and matabolized. The night soil was actively oxidized by this organism.
社団法人日本生物工学会の論文
1961-09-15