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Olive Tree (Olea europaea) Pruning: Chemical Composition and Valorization of Wastes Through Liquefaction

2025Text Open access
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datacite.subject.fosCiências Naturais::Ciências da Terra e do Ambiente
dc.contributor.authorDomingos, idalina
dc.contributor.authorDomingos Ferreira, Miguel
dc.contributor.authorFerreira, José
dc.contributor.authorEsteves, Bruno
dc.contributor.editorMDPI
dc.date.accessioned2025-12-10T10:37:50Z
dc.date.available2025-12-10T10:37:50Z
dc.date.issued2025
dc.description.abstractOlive tree branches (OB) and leaves (OL) from the Viseu region (Portugal) were studied for their chemical composition and liquefaction behavior using polyalcohols. Chemical analysis revealed that OL contained higher ash content (4.08%) and extractives, indicating more bioactive compounds, while OB had greater α-cellulose (30.47%) and hemicellulose (27.88%). Lignin content was higher in OL (21.64%) than OB (16.40%). Liquefaction experiments showed that increasing the temperature from 140 ◦C to 180 ◦C improved conversion, with OB showing a larger increase (52.5% to 80.9%) compared to OL (66% to 72%). OB reached peak conversion faster, and the optimal particle size for OB was 40–60 mesh, while OL performed better at finer sizes. OL benefited more from higher solvent ratios, whereas OB achieved high conversion with less solvent. FTIR analysis confirmed that acid-catalyzed liquefaction breaks down lignocellulosic structures, depolymerizes cellulose and hemicellulose, and modifies lignin, forming hydroxyl, aliphatic, and carbonyl groups. These changes reflect progressive biomass degradation and the incorporation of polyalcohol components, converting solid biomass into a reactive, polyol-rich liquid. The study highlights the distinct chemical and processing characteristics of olive branches and leaves, informing their potential industrial applications.por
dc.identifier.citationDomingos, I.; Ferreira, M.; Ferreira, J.; Esteves, B. Olive Tree (Olea europaea) Pruning: Chemical Composition and Valorization of Wastes Through Liquefaction. Sustainability 2025, 17, 6739
dc.identifier.doihttps://doi.org/10.3390/su17156739
dc.identifier.urihttp://hdl.handle.net/10400.19/9573
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relationUIDB/00681
dc.relation.hasversionhttps://www.mdpi.com/2071-1050/17/15/6739
dc.rights.uriN/A
dc.subjectOlea europaea
dc.subjectolive tree pruning
dc.subjectchemical composition
dc.subjectliquefaction
dc.subjectagroindustrial residues
dc.subjectoptimization
dc.titleOlive Tree (Olea europaea) Pruning: Chemical Composition and Valorization of Wastes Through Liquefactionpor
dc.typetext
dspace.entity.typePublication
oaire.citation.issue15
oaire.citation.startPage6739
oaire.citation.titleSustainability
oaire.citation.volume17
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameDomingos
person.familyNameDomingos Ferreira
person.familyNameFerreira
person.familyNameEsteves
person.givenNameidalina
person.givenNameMiguel
person.givenNameJosé
person.givenNameBruno
person.identifier2119255
person.identifier.ciencia-id7116-E1DE-88E7
person.identifier.ciencia-idB81E-BE45-E128
person.identifier.ciencia-id521B-63A7-B248
person.identifier.orcid0000-0002-4308-1563
person.identifier.orcid0009-0006-9290-2686
person.identifier.orcid0000-0001-7596-8065
person.identifier.orcid0000-0001-6660-3128
person.identifier.ridC-2173-2012
person.identifier.scopus-author-id24281086400
person.identifier.scopus-author-id18133647300
person.identifier.scopus-author-id57202554441
relation.isAuthorOfPublication50134ab7-55eb-4e8a-a5ea-5cc54b1468e3
relation.isAuthorOfPublicationf0cead6a-42b5-4fe2-8ce6-4bc710a56ce7
relation.isAuthorOfPublication7d09c228-3415-4272-9299-89c6951565d7
relation.isAuthorOfPublicationa3351493-41e8-4758-acae-39e3382d0b04
relation.isAuthorOfPublication.latestForDiscovery50134ab7-55eb-4e8a-a5ea-5cc54b1468e3

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