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KMID : 0380019950100040431
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Korean Journal of Biotechnology and Bioengineering
1995 Volume.10 No. 4 p.431 ~ p.447
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Cultural Conditions of Exopolysaccharide KS-1 Produced by Bacillus polymyxa KS-1
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권기석/Kwon, Gi Seok
윤병대/주현규/Yoon, Byung Dae/Joo, Hyun Kyu
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Abstract
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Optimized fermentation medium and cultural conditions for the production of exopolysaccharide KS1 with Bacillus polymyxa KS-1 was following as; 30g glucose, 2.5g yeast extract, 2.5g KH2PO,, 0.5g NaC1, 0.3g MgSO, ? 7H20, 0.1g CaCO,, 0.05g FeSO, ? 7Hr0, and 0.05g MnSO, ? 4H20 in 1 liter distilled water. The exopolysaccharide production was influenced by the temperature and pH, the optimal conditions for the production of exopolysaccharide KS-1 seemed to be 301C and pH 7.0, respectively. About 10.3g/h of maximum exopolysaccharide was obtained at the initial pH 7.0, 301C, 2vvm of aeration rate and 400 rpm of impeller speed in a jar fermentor.
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