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Sponge-Associated Bacterium, Yangia pacifica:A Potential Candidate for Bioremediation of Azo Dyes


Affiliations
1 Aqua-Geomicrobiology Laboratory, CSIR-National Institute of Oceanography, Goa 403 004, India
2 Microbiology Laboratory, CSIR-National Institute of Oceanography, Goa 403 004, India
 

The bioremediation potential of bacteria associated with the sponge Cinachyrella cavernosa on azo dyes, Amido black and Congo red is reported. Twenty four percent of the bacteria decolourized these dyes at 50 mg l–1 concentration. The isolate, Yangia pacifica, which showed higher tolerance and decolourization potential, was subjected to detailed studies. The strain showed >70% decolourization on day 3 and >96% on day 7. Decolourization was dependent on growth, medium, pH, temperature and dye concentration. Although decolourization reduced the toxicity of both dyes, the mechanism leading to decolourization of the two dyes was different.

Keywords

Azo Dyes, Decolourization, Sponge-Associated Bacteria, Yangia pacifica.
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  • Sponge-Associated Bacterium, Yangia pacifica:A Potential Candidate for Bioremediation of Azo Dyes

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Authors

N. S. Subina
Aqua-Geomicrobiology Laboratory, CSIR-National Institute of Oceanography, Goa 403 004, India
Shanta Nair
Microbiology Laboratory, CSIR-National Institute of Oceanography, Goa 403 004, India
Maria-Judith Gonsalves
Aqua-Geomicrobiology Laboratory, CSIR-National Institute of Oceanography, Goa 403 004, India

Abstract


The bioremediation potential of bacteria associated with the sponge Cinachyrella cavernosa on azo dyes, Amido black and Congo red is reported. Twenty four percent of the bacteria decolourized these dyes at 50 mg l–1 concentration. The isolate, Yangia pacifica, which showed higher tolerance and decolourization potential, was subjected to detailed studies. The strain showed >70% decolourization on day 3 and >96% on day 7. Decolourization was dependent on growth, medium, pH, temperature and dye concentration. Although decolourization reduced the toxicity of both dyes, the mechanism leading to decolourization of the two dyes was different.

Keywords


Azo Dyes, Decolourization, Sponge-Associated Bacteria, Yangia pacifica.

References





DOI: https://doi.org/10.18520/cs%2Fv113%2Fi05%2F965-969