Effect of aqueous extracts from Ceriporiopsis subvermispora-biotreated wood on the decolorization of Azure B by Fenton-like reactions
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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| Data(s) |
07/11/2013
07/11/2013
2012
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| Resumo |
Aqueous extracts from wood biotreated with the white-rot fungus Ceriporiopsis subvermispora were evaluated for their Fe3+- and Cu2+-reducing activities and their anti- or prooxidant properties in Fenton-like reactions to decolorize the recalcitrant dye Azure B. The decolorization of Azure B was strongly inhibited in the presence of 10% (v/v) wood extracts. Only 0.1% (v/v)-diluted extracts provided some enhancement of the Azure B decolorization. The iron-containing reactions decolorized more Azure B and consumed substantially more H2O2 than the reactions containing copper. This study demonstrates that water-soluble wood phenols exert anti- or prooxidant effects that depend on their concentration in the reactions and on the type of cation, Fe3+ or Cu2+, used to convert H2O2 to OH radicals. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved. FAPESP [03/04465-6] CAPES CNPq SCTDE/SP |
| Identificador |
INTERNATIONAL BIODETERIORATION & BIODEGRADATION, OXFORD, v. 74, n. 7, pp. 61-66, OCT, 2012 0964-8305 http://www.producao.usp.br/handle/BDPI/42810 10.1016/j.ibiod.2012.07.010 |
| Idioma(s) |
eng |
| Publicador |
ELSEVIER SCI LTD OXFORD |
| Relação |
INTERNATIONAL BIODETERIORATION & BIODEGRADATION |
| Direitos |
closedAccess Copyright ELSEVIER SCI LTD |
| Palavras-Chave | #FENTON REACTION #DYES #HYDROXYL RADICAL #WOOD BIODEGRADATION #CERIPORIOPSIS SUBVERMISPORA #SOLID-STATE FERMENTATION #PINUS-TAEDA #GLOEOPHYLLUM-TRABEUM #PEROXYL RADICALS #OXALIC-ACID #PULP-MILL #DEGRADATION #IRON #BIODEGRADATION #LIGNIN #BIOTECHNOLOGY & APPLIED MICROBIOLOGY #ENVIRONMENTAL SCIENCES |
| Tipo |
article original article publishedVersion |
