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Type: Artigo de periódico
Title: Biodegradation of chlorolignin and lignin-like compounds contained in E-1-pulp bleaching effluent by fungal treatment
Author: Soares, CHL
Duran, N
Abstract: The ligninolytic system from the fungi Trametes villosa and Panus crinitus can efficiently degrade all fractions of different molecular mass contained in El-bleaching effluent, but with different degradation rates. The lower-molecular-mass (MM) materials were better characterized when the elution in the size-exclusion high-performance liquid chromatography were monitored at 210 than at 280 nm, which indicates that these compounds may be ring cleavage byproducts from depolymerized chlorolignin. The biodegraton of E-1 effluent by both fungi was a multistage process, involving an initial chemical modification of the higher-MM compounds and concomitant oxidation of the lower-MM materials. A subsequent depolymerization of chemically modified polymeric lignin-like compounds also took place. Each stage may require one or several different enzymes. The results suggested that laccase was involved in the initial stage.
Subject: effluent biodegradation
E-1-pulp bleaching effluent
basidiomycete fungi
ligninolytic enzymes
size-exclusion high-performance liquid chromatography
Country: EUA
Editor: Humana Press Inc
Rights: fechado
Identifier DOI: 10.1385/ABAB:95:2:135
Date Issue: 2001
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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