ルーメンから分離される微生物の研究-2-橙赤色球菌とその性質-2-

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The following conclusions had been obtained in the previous report. The orange colored rumen cocci were considered to be similar to Streptococcus bovis Orla-Jensen, but they were strict anaerobes. As an orange colored pigment was developed in the nutritionally poor medium and lactic acid recovery for consumed sugars was lower than the theoretical value of home lactic fermentation, they could not be determined as true lactic Streptococci. In the present report, the nutritional requirements of orange colored Streptococcus strain No. 148 were studied. This strain grew well on synthetic medium containing urea, ammonia or nitrate as sole source of nitrogen. Vitamins were not required, but its growth was stimulated by biotin. The orange colored pigment was developed by addition of cysteine, biotin and inorganic nitrogenous nutrient to the medium.
公益社団法人日本農芸化学会の論文