Extracellular Polysaccharide Produced by Strain No. 626 of Aeromonas hydrophila
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概要
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An organism producing extracellular polysaccharide was isolated from soil and identified as Aeromonas hydrophila (Chester) Stanier. The effects of medium components and cultural conditions on production of the polysaccharide were studied. The optimal concentrations of carbon and nitrogen sources were 5 % and 0.3 %, respectively, for production of the polysaccharide. The optimal initial pH was 79. The maximum polysaccharide yield was obtained at 4-8 days of fermentation. From sucrose and raffinose as carbon source, the organism produced levan and acidic polysaccharide in the ratio of 7:3 and 4:6, respectively. From glucose, galactose, fructose, mannose, maltose and lactose, mainly acidic polysaccharide was produced. The acidic polysaccharide was found to contain galactose, mannose and glucuronic acid in a ratio of 5:4:2. The acidic polysaccharides obtained from sucrose and lactose seemed to be the same polysaccharide.
著者
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Ueda Seinosuke
Department Of Agricultural Chemistry Faculty Of Agriculture Hokkaido University
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OSAJIMA Katsuhiro
Department of Food Science and Technology, Faculty of Agriculture, Kyushu University
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ITO Kouichi
Department of Food Science and Technology, Faculty of Agriculture, Kyushu University
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MOMII Fumiko
Department of Food Science and Technology, Faculty of Agriculture, Kyushu University
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