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dc.contributor.authorValls Vidal, Cristina
dc.contributor.authorCadena Chamorro, Edith Marleny
dc.contributor.authorRoncero Vivero, María Blanca
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera
dc.date.accessioned2013-01-16T08:53:18Z
dc.date.created2013
dc.date.issued2013
dc.identifier.citationValls, 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.issn0144-8617
dc.identifier.urihttp://hdl.handle.net/2117/17381
dc.description.abstractVarious 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.extent7 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria paperera::Primeres matèries papereres::Cel·lulosa
dc.subjectÀrees temàtiques de la UPC::Enginyeria paperera::Pasta paperera::Blanqueig de pastes
dc.subject.lcshCellulose fibers
dc.subject.lcshDyes and dyeing--Cellulose
dc.titleObtaining biobleached eucalyptus cellulose fibres by using various enzyme combinations
dc.typeArticle
dc.subject.lemacCel·lulosa -- Química
dc.subject.lemacBlanqueig
dc.contributor.groupUniversitat Politècnica de Catalunya. CIPAGRAF - Grup de Recerca Paperer i Gràfic
dc.identifier.doi10.1016/j.carbpol.2012.08.083
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0144861712008739#
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac11177971
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorValls, C.; Cadena, E.; Roncero, M.
local.citation.publicationNameCarbohydrate polymers
local.citation.volume92
local.citation.startingPage276
local.citation.endingPage282


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