| Aerobic and anaerobic degradation of tannic acid on water samples from Monjolinho reservoir (São Carlos, SP, Brazil). | |
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MedLine Citation:
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PMID: 12659006 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In order to describe the transformations of tannic acid during its degradation (under aerobic and anaerobic conditions) incubations were performed. To evaluate the oxygen consumption, the tannic acid was added to 1 L of water sample from Monjolinho's reservoir (22 degrees 00'S and 47 degrees 54'W); these solutions were aerated and the dissolved oxygen was monitored for 16 days, the anaerobic process was avoided. For the anaerobic and aerobic degradation, the dissolved organic carbon and the acid tannic concentrations were estimated on the samples days. The results were fitted to first-order kinetic model, being possible to verify that during the 16 days the oxygen uptake was 3.6 mg.L-1, the deoxygenation rate (kD) of this process was 0.39 day-1. The degradation coefficients were calculated through the decay of the tannic acid and organic carbon concentrations. In the aerobic process, the global decay coefficient (kG) was 0.36 day-1 and in the anaerobic 0.28 day-1. Overall, the obtained degradation coefficients suggest that the bacterioplankton of the Monjolinho's reservoir possess a high capacity of polyphenols degradation. |
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Authors:
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M B Cunha-Santino; Júnior I Bianchini; L E F Serrano |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Brazilian journal of biology = Revista brasleira de biologia Volume: 62 ISSN: 1519-6984 ISO Abbreviation: Braz J Biol Publication Date: 2002 Nov |
Date Detail:
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Created Date: 2003-03-27 Completed Date: 2003-05-05 Revised Date: 2007-09-06 |
Medline Journal Info:
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Nlm Unique ID: 101129542 Medline TA: Braz J Biol Country: Brazil |
Other Details:
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Languages: eng Pagination: 585-90 Citation Subset: IM |
Affiliation:
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Programa de Pós-graduação em Ecologia e Recursos Naturais, Universidade Federal de São Carlos, Rodovia Washington Luís, km 235, CEP 13565-905, C.P. 676, São Carlos, SP, Brazil. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aerobiosis Anaerobiosis Biodegradation, Environmental Brazil Fresh Water / chemistry Hydrolyzable Tannins / metabolism* Oxygen Consumption |
| Chemical | |
Reg. No./Substance:
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0/Hydrolyzable Tannins |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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