好氣性有胞子乳酸菌による乳酸製造

概要

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As reported previously, an aerobic-spore-forming lactic acid bacterium was isolated by one of tne authors, and was named, for the time being, the J. II bacterium. Under pure culture, it produces L-(dextro)-lactic acid, contrary to Lactobacillus delbrückii, which produces D-(levo)-lactic acid. The culture conditions and the utility of the J. II. bacterium were examined in comparison with Lactobacillus delbrückii on the semi-industrial scale (1_??_2 tons scale). It was found that the yield of lactic acid by the J. II. bacterium was equal or superior to that by Lactobacillus delbrückii, i.e., glucose of the raw material was converted to lactic acid almost completely (97% yield). Under the open tank system on the industrial scale, however, inactive lactic acid was obtained in both cases notwithstanding their original L- or D-type.
社団法人日本農芸化学会の論文