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Effect of alkaline and autohydrolysis processes on the purity of obtained hemicelluloses from corn stalks
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 |