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KMID : 0903520060490030165
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
2006 Volume.49 No. 3 p.165 ~ p.169
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Growth Characteristics of Citrobacter sp. MB2, Azo Dyes Decolorizing Bacterium
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Kwoen Dae-Jun
Ji Won-Dae
Kwon Oh-Jun
Lee Tae-Jong
Lee Nan-Hee
Son Dong-Hwa
Choi Ung-Kyu
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Abstract
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A Citrobacter sp. MB 2, azo dyes decolorizing bacterium, was isolated from the wastewater and soil and identified as Citrobacter sp.. It was examined that optimum conditions for culture media were 0.5% of sucrose, 1.0% of yeast extract, 0.1% of K2HPO4, 0.1% of NaHCO3 per distilled water. The best efficient condition of culture was obtained at pH 7.0, 30oC and aerobic shaking culture. The number of Citrobacter sp. MB2 in optimum medium was increased more than 7 fold compared to basal medium and 50 fold compared to nutrient broth. This strain was exhibited strong resistance against metal salts and antibiotics (ampicillin and penicillin G).
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KEYWORD
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Citrobacter sp. MB 2, azo dye, decolorization
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