Decolorization of azo dyes by Rhodobacter sphaeroides
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Rhodobacter sphaeroides AS1.1737 decolorized more than 90% of several azo dyes (200 mg dyes l−1) in 24 h. The optimal culture conditions were: anaerobic illumination (1990 lx), peptone as carbon source, temperature 35–40 °C and pH 7–8. Intracellular crude enzyme from this strain had azoreductase activity, optimized temperature as 45–50 °C, and decolorization kinetics which were consistent with a ping-pong mechanism.
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- Sponza DT, Isik M (2002) Decolorization and azo dye degradation by anaerobic/aerobic sequential process. Enzyme Microb. Technol. 31: 102–110.Google Scholar