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https://hdl.handle.net/1822/4351
Título: | Degradation of azo dyes by trametes villosa laccase over long periods of oxidative conditions |
Autor(es): | Zille, Andrea Górnacka, B. Rehorek, A. Paulo, Artur Cavaco |
Data: | Nov-2005 |
Editora: | American Society for Microbiology (ASM) |
Revista: | Applied and Environmental Microbiology |
Citação: | "Applied and Environmental Microbiology". ISSN 0099-2240. 71:11 (Nov. 2005) 6711-6718. |
Resumo(s): | Trametes villosa laccase was used for direct azo dye degradation, and the reaction products that accumulated after 72 h of incubation were analyzed. Liquid chromatography-mass spectrometry (LC-MS) analysis showed the formation of phenolic compounds during the dye oxidation process as well as a large amount of polymerized products that retain azo group integrity. The amino-phenol reactions were also investigated by 13C-nuclear magnetic resonance and LC-MS analysis, and the polymerization character of laccase was shown. This study highlights the fact that laccases polymerize the reaction products obtained during long-term batch decolorization processes with azo dyes. These polymerized products provide unacceptable color levels in effluents, limiting the application of laccases as bioremediation agents. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/4351 |
DOI: | 10.1128/AEM.71.11.6711-6718.2005 |
ISSN: | 0099-2240 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | DET/2C2T - Artigos em revistas internacionais com arbitragem científica |