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dc.contributor.authorNiknam, S.Mehdi
dc.contributor.authorKashaninejad, Mansoore
dc.contributor.authorEscudero Barbero, Isabel 
dc.contributor.authorSanz Díez, Mª Teresa 
dc.contributor.authorBeltrán Calvo, Sagrario 
dc.contributor.authorBenito Moreno, José Manuel 
dc.date.accessioned2021-10-27T12:56:55Z
dc.date.available2021-10-27T12:56:55Z
dc.date.issued2021-09
dc.identifier.issn0959-6526
dc.identifier.urihttp://hdl.handle.net/10259/6084
dc.description.abstractOlive pomace, a solid residue generated during olive oil production process and a rich source of phenolic compounds, was dried and defatted to obtain a pomace oil rich in monounsaturated fatty acids with 64% oleic acid. The defatted pomace was further treated by ultrasound-assisted extraction (UAE). The optimal phenol extraction conditions of 10 min, 40% amplitude and 4% (w/v) solid:solvent ratio, yielded to 14.70 mg/g total phenols, 2.48 mg/g total flavonoids and 0.924 mmol Trolox/g antioxidant activity. In order to purify valuable biophenols, two polymeric resins (XAD4 and XAD16) and two activated charcoals (NPAC and GAC) were tested as adsorbents using a magnetic stirrer and an incubator shaker. XAD16 (100 g/L) in magnetic stirrer showed the optimal adsorption ratios with 74.36%, 39.25%, 68.79% and 100% for total phenols, hydroxytyrosol, tyrosol and oleuropein, respectively. Desorption using acidified 50% (v/v) ethanol-water at pH = 2.3 proved 57.65% recovery of total phenols, 19.27% of hydroxytyrosol and 45.73% of tyrosol. These results indicate that extraction and selective purification of biophenols from olive pomace can be achieved by the proposed UAE using 50% v/v ethanol-water as solvent, followed by adsorption-desorption stages with the XAD16 polymeric resin.en
dc.description.sponsorshipSpanish Agencia Estatal de Investigaci ´on [grant number PID2019-104950RB-I00/AEI/10.13039/ 501100011033] and the Junta de Castilla y Le´on (JCyL) and the European Regional Development Fund (ERDF) [grant numbers BU301P18 and BU050P20].es
dc.format.mimetypeapplication/pdf
dc.language.isoenges
dc.publisherElsevieres
dc.relation.ispartofJournal of Cleaner Production. 2021, V. 316, 128340es
dc.rightsAtribución 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectOlive pomaceen
dc.subjectUltrasound-assisted extractionen
dc.subjectResponse surface methodologyen
dc.subjectPhenolics adsorption-desorptionen
dc.subject.otherIngeniería químicaes
dc.subject.otherChemical engineeringen
dc.titleValorization of olive mill solid residue through ultrasound-assisted extraction and phenolics recovery by adsorption processen
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.relation.publisherversionhttps://doi.org/10.1016/j.jclepro.2021.128340es
dc.identifier.doi10.1016/j.jclepro.2021.128340
dc.journal.titleJournal of Cleaner Productionen
dc.volume.number316es
dc.page.initial128340es
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones


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