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dc.contributor.authorQuintana, Elisabet
dc.contributor.authorValls Vidal, Cristina
dc.contributor.authorVidal Lluciá, Teresa
dc.contributor.authorRoncero Vivero, María Blanca
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera
dc.date.accessioned2015-05-15T10:34:35Z
dc.date.available2016-04-01T00:31:01Z
dc.date.created2015-04-19
dc.date.issued2015-04-19
dc.identifier.citationQuintana, E. [et al.]. Comparative evaluation of the action of two different endoglucanases. Part I: on a fully bleached, commercial acid sulfite dissolving pulp. "Cellulose", 19 Abril 2015, vol. 22, núm. 3, p. 2067-2079.
dc.identifier.issn0969-0239
dc.identifier.urihttp://hdl.handle.net/2117/27933
dc.description.abstractA fully bleached commercial acid dissolving pulp was treated with two endoglucanases, one obtained from Paenibacillus barcinonensis (B) and the other one produced from Cerrena unicolor (F) with the intention to improve cellulose reactivity and processability in the viscose process. B cellulose was tested under 120 U/g oven dry pulp (odp) and the F cellulase under two conditions, 12 and 60 U/g odp. In addition, a purification stage, consisting in a cold caustic extraction (CCE) of 9 % w/v NaOH, was applied before or after the enzymatic treatment in order to reduce the amount of hemicellulose and improve the action of enzymes. The treated pulps were evaluated in terms of brightness, viscosity, water retention value, fibre morphology, carbohydrate composition, Fock solubility and NMR. In general, results revealed that both endoglucanases improved cellulose reactivity, albeit in a different way; thus, B caused no scissions in the cellulose chain and no significant reduction in fibre length, whereas F strongly decreased viscosity, shortened fibre length and increased considerably the amount of fines. The result of applying two different doses of F cellulase was reflected on Fock solubility and fibre morphology. F60 treatment was found to give the highest value of Fock solubility and the biggest reduction of fibre length. The effect of both endoglucanases on Fock solubility was increased by introducing an earlier CCE stage. Finally, a CCE_B120 pulp with 3 % of hemicellulose and 69 % of Fock solubility was obtained
dc.format.extent13 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria paperera::Pasta paperera
dc.subjectÀrees temàtiques de la UPC::Enginyeria paperera::Primeres matèries papereres::Cel·lulosa
dc.subject.lcshCellulose
dc.subject.lcshWood-pulp--Bleaching
dc.subject.lcshOligosaccharides
dc.subject.otherCellulose
dc.subject.otherBiobleached pulp
dc.subject.otherDissolving pulp
dc.subject.otherEndoglucanase
dc.subject.otherOligosaccharides
dc.subject.otherFock solubility
dc.titleComparative evaluation of the action of two different endoglucanases. Part I: on a fully bleached, commercial acid sulfite dissolving pulp
dc.typeArticle
dc.subject.lemacPaper -- Blanqueig
dc.subject.lemacCel·lulosa
dc.subject.lemacOligosacàrids
dc.contributor.groupUniversitat Politècnica de Catalunya. CELBIOTECH - Grup de Recerca: Enginyeria Paperera
dc.identifier.doi10.1007/s10570-015-0623-1
dc.relation.publisherversionhttp://link.springer.com/article/10.1007/s10570-015-0623-1
dc.rights.accessOpen Access
drac.iddocument15636406
dc.description.versionPostprint (author’s final draft)
upcommons.citation.authorQuintana, E.; Valls, C.; Vidal, T.; Roncero, M.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameCellulose
upcommons.citation.volume22
upcommons.citation.number3
upcommons.citation.startingPage2067
upcommons.citation.endingPage2079


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