| Degradation and detoxification of acid orange 52 by Pseudomonas putida mt-2: a laboratory study. | |
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MedLine Citation:
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PMID: 21557089 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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INTRODUCTION: Acid orange 52 (AO52), extensively used in textile industries, was decolorized by Pseudomonas putida mt-2. AO52 azoreduction products such as N,N'-dimethyl-p-phenylenediamine (DMPD) and 4-aminobenzenesulfonic acid (4-ABS), were identified in the static degradation mixture. These amines were identified only in media of static incubation, which is consistent with their biotransformation under shaken incubation (aerobic conditions). MATERIALS AND METHODS: Tests with azo products were carried out, and whole cells were found able to easily degrade DMPD contrary to 4-ABS. However, this last could be attacked by cell extract, and an oxygen uptake was observed during the reaction. RESULTS: Degradation of DMPD by entire cells led to the formation of catechol. These results show that P. putida was able to decolorize AO52 and metabolize its derivative amines. In addition, the ability of tested compounds was evaluated in vitro to reduce human plasma butyrylcholinesterase (BuChE) activity. CONCLUSION: Azoreduction products seem to be responsible for BuChE inhibition activity observed in static biodegradation extract. However, toxicity of AO52 completely disappears after shaken incubation with P. putida, suggesting that bacterium has a catabolism which enables it to completely degrade AO52 and especially, to detoxify the dye mixture. |
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Authors:
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Hedi Ben Mansour; Kamel Ghedira; Daniel Barillier; Leila Chekir Ghedira; Ridha Mosrati |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-5-10 |
Journal Detail:
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Title: Environmental science and pollution research international Volume: - ISSN: 1614-7499 ISO Abbreviation: - Publication Date: 2011 May |
Date Detail:
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Created Date: 2011-5-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9441769 Medline TA: Environ Sci Pollut Res Int Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Equipe de Recherche en Physico-Chimie et Biotechnologie (E.R.P.C.B - EA3914), IUT-UFR Sciences, Université de Caen, Caen, Basse-Normandie, France. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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