Decolorization of 1-aminoanthraquinone-2-sulfonic acid by Sphingomonas xenophaga
World Journal of Microbiology and Biotechnology, ISSN: 0959-3993, Vol: 24, Issue: 7, Page: 1147-1152
2008
- 14Citations
- 8Captures
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Article Description
Sphingomonas xenophaga QYY from sludge samples could effectively decolorize 1-aminoanthraquinone-2-sulfonic acid (ASA-2), one kind of anthraquinone dye intermediate, under aerobic conditions. More than 98% of ASA-2 could be removed within 120 h at the dye concentration from 200 mg l to 1,000 mg l due to oxidative degradation. The strain converted ASA-2 to 2-(2′-hydroxy-3′-amino-4′-sulfo-benzoyl)-benzoic acid, 2-(2′-amino-3′-sulfo-6′-hydroxy-benzoyl)-benzoic acid, o-phthalic acid and 2-amino-3-hydroxy-benzenesulfonic acid, which were identified using HPLC-MS and NMR. A possible initial decolorization pathway was proposed according to these metabolites. The decolorization of ASA-2 by cells in the basal salt medium was induced by ASA-2, and was due to soluble cytosolic enzymes. Combined initial decolorization pathway and the analysis of decolorization enzyme(s), the major enzyme responsible for ASA-2 decolorization was a NADH-dependent oxygenase. © 2007 Springer Science+Business Media B.V.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=44649107671&origin=inward; http://dx.doi.org/10.1007/s11274-007-9586-1; http://link.springer.com/10.1007/s11274-007-9586-1; http://link.springer.com/content/pdf/10.1007/s11274-007-9586-1; http://link.springer.com/content/pdf/10.1007/s11274-007-9586-1.pdf; http://link.springer.com/article/10.1007/s11274-007-9586-1/fulltext.html; http://www.springerlink.com/index/10.1007/s11274-007-9586-1; http://www.springerlink.com/index/pdf/10.1007/s11274-007-9586-1; https://dx.doi.org/10.1007/s11274-007-9586-1; https://link.springer.com/article/10.1007/s11274-007-9586-1
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