Isolation of a bacterium producing viscous compound during rice washing water treatment by yeast.
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概要
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A bacterium designated tentatively as YB-2 was isolated from rice washing water treated with yeast. The bacterium produced highly viscous polysaccharide and prevented yeast treatment of rice washing water. The bacterium required organic acids like L-malate and thiamine for its growth. The bacterium utilized ammonium sulfate, casamino acid and amino acids like glutamate as nitrogen source but did not utilize nitrate and urea. The bacterium also utilized glucose, lactose, dextrin and starch but did not utilize cellulose. It did not grow below pH 4.0 or above pH 9.0 and its optimum temperature for growth was about 30°C.<BR>It was most effective to adjust pH of rice washing water at 4.5 and to add methabisulfate (20 ppm) to the rice washing water for preventing contamination of the bacterium.
- 公益財団法人 日本醸造協会の論文
公益財団法人 日本醸造協会 | 論文
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