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D’Souza, Edna; Fulke, Abhay B.; Mulani, Najmuddin; Ram, Anirudh; Asodekar, Manish; Narkhede, Niteen; Gajbhiye, S. N., E-mail: afulke@nio.org, E-mail: abhay_fulke@yahoo.co.in2017
AbstractAbstract
[en] Alcaligenes species capable of degrading highly recalcitrant, carcinogenic, water-soluble dye—Congo red—were isolated from Indian West coastal sediments. Individual strains showed decolorization rates ranging from 76.49 to 98.76% within 24–48 h. Decolorization was most efficient at anoxic conditions catalyzed by intracellular azoreductase enzyme with an activity of 0.032 µmol min−1 mg−1 of protein. Degradation was confirmed by HPLC and FTIR analysis. LC/MS analysis of degraded metabolites established the cleavage of the azo bond-producing biphenyl diamine and 1,2′-diaminonapthalene-4-sulfonic acid. These results signify the effectiveness and ease to engineer processes such as feed batch/immobilized cell systems using these strains as biocatalysts to address the problem of global coastal water pollution caused by increased disposal of azo dye-containing industrial effluents.
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Copyright (c) 2017 Springer-Verlag GmbH Germany; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
Journal
Environmental Earth Sciences; ISSN 1866-6280; ; v. 76(20); p. 1-13
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