dc.contributor.author | Egüés Artola, Itziar | |
dc.contributor.author | Sánchez Agra, Cristina | |
dc.contributor.author | Mondragón Egaña, Iñaki Bixintxo | |
dc.contributor.author | Labidi, Jalel | |
dc.date.accessioned | 2024-02-08T10:22:31Z | |
dc.date.available | 2024-02-08T10:22:31Z | |
dc.date.issued | 2012 | |
dc.identifier.citation | Bioresource Technology 103(1) : 239-248 (2012) | |
dc.identifier.issn | 0960-8524 | |
dc.identifier.uri | http://hdl.handle.net/10810/65271 | |
dc.description.abstract | [EN]A study of the potential of autohydrolysis and alkaline extraction processes from corn stalks was performed
for high purity hemicellulose extraction. The influence of process parameters on the purity of
obtained hemicelluloses was analyzed. An experimental design was developed for the autohydrolysis
treatments to determine the optimal conditions to solubilize the hemicelluloses with lowest content
in contaminants. On the other hand, alkaline extraction, including raw material pretreatment (dewaxing
and delignification step) was carried out analyzing the effectiveness of this processes for maximum pure
hemicellulose recovery. The maximum yield (54% of the raw material hemicelluloses) and the best physicochemical
properties (highest hemicellulose content free of lignin) were obtained with these pretreatments
in alkaline extraction. Moreover, the effect of lignin removal by sulfuric acid from the
autohydrolysis liquors before hemicellulose precipitation was studied. This purification step has allowed
to obtain lignin-free autohydrolysis hemicellulose but with the presence of sulfur as predominant
contaminant. | es_ES |
dc.description.sponsorship | Authors would like to thank the Department of Education, Universities and Investigation of the Basque Government (pre-doctoral scholarship programs of young researchers training) for supporting financially this work. | |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.subject | corn residues | es_ES |
dc.subject | autohydrolysis | es_ES |
dc.subject | alkaline extraction | es_ES |
dc.subject | hemicelluloses | es_ES |
dc.subject | purification | es_ES |
dc.title | Effect of alkaline and autohydrolysis processes on the purity of obtained hemicelluloses from corn stalks | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | Copyright © 2011 Elsevier Ltd. under CC BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0960852411014271 | |
dc.identifier.doi | 10.1016/j.biortech.2011.09.139 | |
dc.departamentoes | Ingeniería química y del medio ambiente | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa eta ingurumenaren ingeniaritza | es_ES |