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Obtaining biobleached eucalyptus cellulose fibres by using various enzyme combinations
dc.contributor.author | Valls Vidal, Cristina |
dc.contributor.author | Cadena Chamorro, Edith Marleny |
dc.contributor.author | Roncero Vivero, María Blanca |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera |
dc.date.accessioned | 2013-01-16T08:53:18Z |
dc.date.created | 2013 |
dc.date.issued | 2013 |
dc.identifier.citation | Valls, C.; Cadena, E.; Roncero, M. Obtaining biobleached eucalyptus cellulose fibres by using various enzyme combinations. "Carbohydrate polymers", 2013, vol. 92, p. 276-282. |
dc.identifier.issn | 0144-8617 |
dc.identifier.uri | http://hdl.handle.net/2117/17381 |
dc.description.abstract | 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 (VATvL system) and methyl syringate (MeSMtL system), respectively, as mediator. A dissimilar mode of action of the two systems was found: the VATvL treatment released both hexenuronic acids and lignin, whereas the MeSMtL 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 VATvL, 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 |
dc.format.extent | 7 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria paperera::Primeres matèries papereres::Cel·lulosa |
dc.subject | Àrees temàtiques de la UPC::Enginyeria paperera::Pasta paperera::Blanqueig de pastes |
dc.subject.lcsh | Cellulose fibers |
dc.subject.lcsh | Dyes and dyeing--Cellulose |
dc.title | Obtaining biobleached eucalyptus cellulose fibres by using various enzyme combinations |
dc.type | Article |
dc.subject.lemac | Cel·lulosa -- Química |
dc.subject.lemac | Blanqueig |
dc.contributor.group | Universitat Politècnica de Catalunya. CIPAGRAF - Grup de Recerca Paperer i Gràfic |
dc.identifier.doi | 10.1016/j.carbpol.2012.08.083 |
dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S0144861712008739# |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 11177971 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Valls, C.; Cadena, E.; Roncero, M. |
local.citation.publicationName | Carbohydrate polymers |
local.citation.volume | 92 |
local.citation.startingPage | 276 |
local.citation.endingPage | 282 |
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