| Obtaining biobleached eucalyptus cellulose fibres by using various enzyme combinations. | |
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MedLine Citation:
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PMID: 23218295 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Various combinations of laccases, xylanase and cellulase were used to biobleach cellulose fibres from eucalyptus. The Trametes villosa and Myceliophthora thermophila laccases were used in combination with violuric acid (VA(TvL) system) and methyl syringate (MeS(MtL) system), respectively, as mediator. A dissimilar mode of action of the two systems was found: the VA(TvL) treatment released both hexenuronic acids and lignin, whereas the MeS(MtL) released lignin alone. Pulp properties were further improved by applying the mediator before the enzyme during treatment. Pulp properties comparable to those provided by industrial TCF sequences were obtained by inserting a xylanase pretreatment before VA(TvL), but no significant effect was observed after the cellulase pretreatment. As an added value, the resulting enzymatically bleached fibres possess a reduced hexenuronic acid content. The chemical oxygen demand of the effluents from each stage was also assessed. |
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Authors:
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Cristina Valls; Edith M Cadena; M Blanca Roncero |
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Publication Detail:
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Type: Journal Article Date: 2012-08-30 |
Journal Detail:
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Title: Carbohydrate polymers Volume: 92 ISSN: 1879-1344 ISO Abbreviation: Carbohydr Polym Publication Date: 2013 Jan |
Date Detail:
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Created Date: 2012-12-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8307156 Medline TA: Carbohydr Polym Country: England |
Other Details:
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Languages: eng Pagination: 276-82 Citation Subset: IM |
Copyright Information:
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Copyright © 2012 Elsevier Ltd. All rights reserved. |
Affiliation:
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Textile and Paper Engineering Department, Universitat Politècnica de Catalunya, Colom 11, E-08222 Terrassa, Spain. Electronic address: cristina.valls@upc.edu. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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