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dc.contributor.authorYedro, Florencia Micaela
dc.contributor.authorGrénman, Henrik
dc.contributor.authorRissanen, Jussi V.
dc.contributor.authorSalmi, Tapio
dc.contributor.authorGarcía Serna, Juan 
dc.contributor.authorCocero Alonso, María José 
dc.date.accessioned2017-06-15T08:23:37Z
dc.date.available2017-06-15T08:23:37Z
dc.date.issued2017
dc.identifier.citationThe Journal of Supercritical Fluids, Febrero 2017, on linees
dc.identifier.urihttp://uvadoc.uva.es/handle/10324/23493
dc.description.abstractHolm oak (Quercus ilex) sapwood was submitted to a hydrothermal treatment and liquid fractions rich in hemicelluloses were obtained. The chemical composition as well as the molar mass were analysed during the experiments. The effect of temperature (130–170 °C) and reaction time (5–220 min) on the conversion and molar mass of the obtained hemicelluloses was investigated. The results were compared to previously published data obtained using Norway spruce. The results show that the extraction rate depends strongly on the wood species used. The maximum yield (approximately 60%) was obtained at 170 °C after 20 min. The molar mass of the hemicelluloses decreased during the extraction due to hydrolysis and the pH of the solution decreased as deacetylation occurred simultaneously. Temperature influenced significantly the hydrolysis rate of the macromolecules. Compared to Norway spruce (softwood), the average molar mass in Holm oak (hardwood) was lower under the same reaction conditions.es
dc.format.mimetypeapplication/pdfes
dc.language.isoenges
dc.publisherElsevieres
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleChemical composition and extraction kinetics of Holm oak (Quercus ilex) hemicelluloses using subcritical wateres
dc.typeinfo:eu-repo/semantics/articlees
dc.identifier.doihttps://doi.org/10.1016/j.supflu.2017.01.016es
dc.relation.publisherversionhttps://www.journals.elsevier.com/the-journal-of-supercritical-fluidses
dc.peerreviewedSIes
dc.description.projectMinisterio de Economía, Industria y Competitividad (Project CTQ2015-64892-R)es
dc.description.projectJunta de Castillay León (Proyecto VA254B11-2)
dc.description.projectMinisterio de Economía, Industria y Competitividad (Project CTQ2013-44143-R)
dc.description.projectMinisterio de Economía, Industria y Competitividad (Project CTQ2011-23293)
dc.description.projectMinisterio de Economía, Industria y Competitividad (Project CTQ2011-27347)
dc.description.projectJunta de Castillay León (Proyecto VA254B11-2)
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International


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