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Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes

2021-02Journal article Open access
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dc.contributor.authorAlves Ferreira Caturra, Júnia Aparecida
dc.contributor.authorLourenço, Ana
dc.contributor.authorMorgado, Francisca
dc.contributor.authorDuarte, Luís C.
dc.contributor.authorRoseiro, Luisa B.
dc.contributor.authorFernandes, M. C.
dc.contributor.authorPereira, Helena
dc.contributor.authorCarvalheiro, Florbela
dc.date.accessioned2021-12-02T15:37:52Z
dc.date.available2021-12-02T15:37:52Z
dc.date.issued2021-02
dc.description.abstractABSTRACT: Residues of Cistus ladanifer obtained after commercial steam distillation for essential oil production were evaluated to produce cellulose enriched solids and added-value lignin-derived compounds. The delignification of extracted (CLRext) and extracted and hydrothermally pretreated biomass (CLRtreat) was studied using two organosolv processes, ethanol/water mixtures (EO), and alkali-catalyzed glycerol (AGO), and by an alkali (sodium hydroxide) process (ASP) under different reaction conditions. The phenolic composition of soluble lignin was determined by capillary zone electrophoresis and by Py-GC/MS, which was also used to establish the monomeric composition of both the delignified solids and isolated lignin. The enzymatic saccharification of the delignified solids was also evaluated. The ASP (4% NaOH, 2 h) lead to both the highest delignification and enzymatic saccharification (87% and 79%, respectively). A delignification of 76% and enzymatic hydrolysis yields of 72% were obtained for AGO (4% NaOH) while EO processes led to lower delignification (maximum lignin removal 29%). The residual lignin in the delignified solids were enriched in G- and H-units, with S-units being preferentially removed. The main phenolics present in the ASP and AGO liquors were vanillic acid and epicatechin, while gallic acid was the main phenolic in the EO liquors. The results showed that C. ladanifer residues can be a biomass source for the production of lignin-derivatives and glucan-rich solids to be further used in bioconversion processes.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAlves-Ferreira, Júnia... [et.al.] - Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes. In: Energies, 2021, Vol. 14(4), article nº1127pt_PT
dc.identifier.doi10.3390/en14041127pt_PT
dc.identifier.eissn1996-1073
dc.identifier.urihttp://hdl.handle.net/10400.9/3621
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationNot Available
dc.relation.publisherversionhttps://doi.org/10.3390/en14041127pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBiorefinerypt_PT
dc.subjectEnzymatic hydrolysispt_PT
dc.subjectBiomass Pre-treatmentpt_PT
dc.subjectLigninpt_PT
dc.subjectOrganosolv processpt_PT
dc.subjectPyrolysispt_PT
dc.titleDelignification of Cistus ladanifer Biomass by Organosolv and Alkali Processespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleNot Available
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/DL 57%2F2016/DL 57%2F2016%2FCP1382%2FCT0007/PT
oaire.citation.issue4pt_PT
oaire.citation.titleEnergiespt_PT
oaire.citation.volume14pt_PT
oaire.fundingStreamDL 57/2016
person.familyNameAlves Ferreira Caturra
person.familyNameLourenco
person.familyNameDuarte
person.familyNamede Bivar Weinholtz Roseiro
person.familyNameFernandes
person.familyNamePereira
person.familyNameCarvalheiro
person.givenNameJúnia Aparecida
person.givenNameAna
person.givenNameLuís
person.givenNameMaria Luisa
person.givenNameMaria da Conceição
person.givenNameHelena
person.givenNameFlorbela
person.identifier359723
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person.identifier.orcid0000-0003-1977-8771
person.identifier.orcid0000-0002-5393-4443
person.identifier.orcid0000-0002-0270-4832
person.identifier.ridA-5901-2011
person.identifier.ridC-1430-2008
person.identifier.ridL-1101-2014
person.identifier.ridL-1860-2014
person.identifier.scopus-author-id36877743000
person.identifier.scopus-author-id56649966600
person.identifier.scopus-author-id6602749883
person.identifier.scopus-author-id8045276200
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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