Imobilização e caracterização de lacase e seu uso na biodegradação de efluentes de indústrias papeleiras

Laccase from Aspergillus sp was immobilized on glutaraldehyde-activated chitosan beads. A comparative study between free and immobilized laccase was conducted and the potential of the resulting immobilized derivative in the biodegradation of pulp and paper mill effluent was evaluated. The immobilize...

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Bibliographic Details
Published inQuímica Nova Vol. 37; no. 2; pp. 209 - 214
Main Authors Sabrina M. V. Pacheco, Carlos Henrique L. Soares
Format Journal Article
LanguageEnglish
Published Sociedade Brasileira de Química 01.04.2014
Subjects
immobilization
laccase
paper mill effluents
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Summary:Laccase from Aspergillus sp was immobilized on glutaraldehyde-activated chitosan beads. A comparative study between free and immobilized laccase was conducted and the potential of the resulting immobilized derivative in the biodegradation of pulp and paper mill effluent was evaluated. The immobilized laccase is more resistant to various denaturing conditions, which allows for the reduction of 65% of the phenols (total and low molecular weight) and loss of 60% of total color in the effluent. These results show the potential of the immobilized laccase in the biodegradation of phenols, the chemical agents responsible for the high toxicity of the effluent generated in cellulose pulp industries.
ISSN:1678-7064
DOI:10.5935/0100-4042.20140036