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KMID : 0545120050150010221
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Journal of Microbiology and Biotechnology
2005 Volume.15 No. 1 p.221 ~ p.225
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Decolorization of a Sulfonated Azo Dye, Congo Red, by Staphylococcus sp. EY-3
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Park EH
Jang MS/Cha IH/Choi YL/Cho YS/Kim CH/Lee YC
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Abstract
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A Staphylococcus sp. EY-3 with the capability of decolorizing Congo Red was isolated from soil at an effluent treatment plant of a textile and dyeing industry. This strain was able to almost completely decolorize a high concentration of Congo Red in 48 h under aerobic conditions. Optimal color removal (more than 96%) was achieved at 30- 40oC and no noticeable effects of different pH values (5.5- 8.0) on decolorization were observed. This strain also exhibited a remarkable decolorization capability against azo dyes under aerobic conditions even at a high concentration (dyes 1 g/l) of dye. The metabolic product of Congo Red degradation by this strain was identified by gas chromatography with mass selective detection (GC/MSD) to be an amine derivative benzidine.
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