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Fractionation of hemicelluloses and lignin from rice straw by combining autohydrolysis and optimised mild organosolv delignification

2015Journal article Open access
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dc.contributor.authorMoniz, Patricia
dc.contributor.authorLino, João
dc.contributor.authorDuarte, Luís C.
dc.contributor.authorRoseiro, Luisa B.
dc.contributor.authorBoeriu, Carmen G.
dc.contributor.authorPereira, Helena
dc.contributor.authorCarvalheiro, Florbela
dc.date.accessioned2016-04-08T15:34:28Z
dc.date.available2016-04-08T15:34:28Z
dc.date.issued2015
dc.description.abstractAn integrated strategy was followed to valorise rice straw, one of the most relevant biomass feedstocks available worldwide, to selectively recover solubilised hemicelluloses and lignin. The pathway encompassed the use of autohydrolysis to hydrolyse the hemicelluloses and an ethanol-based organosolv process to solubilise lignin. Several autohydrolysis conditions were assayed with the best results obtained at 210 ºC (log R0 4.15), which enabled high removal of hemicelluloses, yielding an oligosaccharide-rich hydrolysate and a treated biomass with low content of hemicelluloses and enriched in cellulose and lignin. The effects of ethanol concentration (5 to 75%), and reaction time (0 to 24 h) on lignin removal under mild temperature (30 ºC) were studied. In optimal conditions (60.5% ethanol, 24h) the delignification yield reached 42%, where as glucan solubilisation was below 17%. Lignin solubilisation yield was not influenced by the organosolv treatment duration while ethanol concentration favored the delignification up to 60.5% ethanol. The organosolv liquors contained economic interesting ligninderived compounds such as vanillin, ferulic, and coumaric acids. The chemical composition and enzymatic digestibility of the treated biomass from autohydrolysis and organosolv delignification were compared, with the latter presenting an almost 10% higher enzymatic digestibility than the former.pt_PT
dc.identifier.citationMoniz, P.; Lino, J.; Duarte, L.C.; [et.al.]. - Fractionation of hemicelluloses and lignin from rice straw by combining autohydrolysis and optimised mild organosolv delignification. In: BioResources, 2015, Vol. 10, nº 2, p. 2626-2641pt_PT
dc.identifier.doi10.15376/biores.10.2.2626-2641pt_PT
dc.identifier.issn1930-2126
dc.identifier.urihttp://hdl.handle.net/10400.9/2922
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherNorth Carolina State Universitypt_PT
dc.relation.publisherversionhttp://dx.doi.org/10.15376/biores.10.2.2626-2641pt_PT
dc.subjectAgricultural Residuespt_PT
dc.subjectAutohydrolysispt_PT
dc.subjectBiomass Pre-treatmentpt_PT
dc.subjectBiorefinerypt_PT
dc.subjectHemicellulosept_PT
dc.subjectLigninpt_PT
dc.subjectRice Strawpt_PT
dc.titleFractionation of hemicelluloses and lignin from rice straw by combining autohydrolysis and optimised mild organosolv delignificationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FAGR-ALI%2F122261%2F2010/PT
oaire.citation.endPage2641pt_PT
oaire.citation.startPage2626pt_PT
oaire.citation.titleBioResourcespt_PT
oaire.citation.volume10pt_PT
oaire.fundingStream5876-PPCDTI
person.familyNameMoniz
person.familyNameDuarte
person.familyNamede Bivar Weinholtz Roseiro
person.familyNamePereira
person.familyNameCarvalheiro
person.givenNamePatricia
person.givenNameLuís
person.givenNameMaria Luisa
person.givenNameHelena
person.givenNameFlorbela
person.identifier59799
person.identifier385852
person.identifier.ciencia-idEC1A-602C-C41D
person.identifier.ciencia-id7F15-9BC9-79AA
person.identifier.ciencia-idF71F-0B5C-AE27
person.identifier.ciencia-id4016-9476-B97D
person.identifier.orcid0000-0002-7085-674X
person.identifier.orcid0000-0001-5820-3669
person.identifier.orcid0000-0003-1562-6658
person.identifier.orcid0000-0002-5393-4443
person.identifier.orcid0000-0002-0270-4832
person.identifier.ridC-1430-2008
person.identifier.ridL-1101-2014
person.identifier.ridL-1860-2014
person.identifier.scopus-author-id37085399000
person.identifier.scopus-author-id56649966600
person.identifier.scopus-author-id6602749883
person.identifier.scopus-author-id7103251554
person.identifier.scopus-author-id6603247136
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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