Effects of laccase-natural mediator systems on kenaf pulp
Autor: | Glòria Andreu, Teresa Vidal |
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Rok vydání: | 2011 |
Předmět: |
Acetosyringone
Environmental Engineering Industrial Waste Bioengineering engineering.material Kappa number Fiber crop Syringaldehyde chemistry.chemical_compound Botany Waste Management and Disposal Laccase biology Renewable Energy Sustainability and the Environment Pulp (paper) Vanillin Hydrogen Peroxide General Medicine biology.organism_classification Pulp and paper industry Kenaf Hibiscus chemistry Textile Industry engineering |
Zdroj: | Bioresource Technology. 102:5932-5937 |
ISSN: | 0960-8524 |
DOI: | 10.1016/j.biortech.2011.03.008 |
Popis: | This paper reports the first application of laccase-mediator systems (LMS) to kenaf pulp. Five natural phenolic compounds (acetosyringone, syringaldehyde, p-coumaric acid, vanillin and acetovanillone) were used as mediators in combination with laccase in an L stage in order to elucidate their effect on delignification. After LMS treatment, pulp samples were subjected to two alkaline treatments (an E or P stage). The results obtained were compared with those provided by the laccase-1-hydroxybenzotriazole (HBT) system. All natural mediators increased kappa number, decreased brightness and changed optical properties of the pulp after the L stage, suggesting that natural mediators tend to couple to fibers during a laccase-mediator treatment. The greatest delignification and bleaching effects after the P stage were obtained with syringaldehyde and acetosyringone, providing an effective means for delignifying kenaf, whereas those based on the other three could be used to functionalize kenaf with a view to obtaining pulp with novel properties. |
Databáze: | OpenAIRE |
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