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A simple process to purify (E)-resveratrol from grape stems with a photo-molecularly imprinted sorbent

2023Artigo científico Acesso aberto
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dc.contributor.authorBzainia, Amir
dc.contributor.authorDias, Rolando
dc.contributor.authorCosta, Mário Rui
dc.date.accessioned2023-12-19T12:24:54Z
dc.date.available2023-12-19T12:24:54Z
dc.date.issued2023
dc.description.abstractThe present work focused on the development of a process of sorption-desorption to purify (E)-resveratrol found in winemaking residues, specifically from the crude extract of grape stems. The core element of this process is a photo-molecularly imprinted sorbent (MIS) synthesized by means of the molecular imprinting technique (MIT). This sorbent is a 4-vinylpyridine rich polymer network which binds (E)-resveratrol at stereospecific sites. Comparison of sorption isotherms of the MIS and its counterpart non-imprinted sorbent (NIS) shows the higher capability of the MIS to bind (E)-resveratrol. It is noteworthy that the size of MIS particles was larger than to those of the NIS (as found by scanning electron microscopy analysis) facilitating its use in sorption-desorption processes without reaching a high backpressure. The MIS was then used to purify (E)-resveratrol from grape stems extract in a two-step purification procedure through a simple device. The initial purification step permitted to increase the purity of (E)-resveratrol from 29% to 78% (34% of recovery), whereas a further one took it to 87% (70% of recovery). The purified fractions were obtained in hydroalcoholic medium and contained other bioactive stilbenes such as (E)-Ɛ-viniferin. The results of this research provide a compelling proof of concept for room-temperature photopolymerization, enabling the development of highly efficient imprinted polymers as sorbents for purifying bioactive compounds from agricultural residues. This significant advancement paves the way for its large-scale implementation in a circular bioeconomy approach.pt_PT
dc.description.sponsorshipThe authors are thankful for the financial aid provided by “BacchusTech-Integrated Approach for the Valorization of Winemaking Residues” (POCI-01-0247-FEDER-069583), supported by the Competitiveness and Internationalization Operational Program (COMPETE 2020), under the PORTUGAL 2020 Partnership Agreement, through the European Regional Development Fund (ERDF). A. Bzainia is grateful to the national funding by the Foundation for Science and Technology (FCT, Portugal) through the PhD grant of UI/BD/153688/2022. R.D. is grateful to the Foundation for Science and Technology (FCT, Portugal) for financial support through national funds FCT/MCTES (PIDDAC) to CIMO (UIDB/00690/2020 and UIDP/ 00690/2020) and SusTEC (LA/P/0007/2020). M.R.C. acknowledges the support by LA/P/0045/2020 (ALiCE), UIDB/50020/ 2020, and UIDP/50020/2020 (LSRE-LCM), funded by national funds through FCT/MCTES (PIDDAC).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBzainia, Amir; Dias, Rolando; Costa, Mário Rui (2023). A simple process to purify (E)-resveratrol from grape stems with a photo-molecularly imprinted sorbent. Food and Bioproducts Processing. ISSN 0960-3085. 142, p. 1-16pt_PT
dc.identifier.doi10.1016/j.fbp.2023.08.010pt_PT
dc.identifier.eissn1744-3571
dc.identifier.issn0960-3085
dc.identifier.urihttp://hdl.handle.net/10198/28988
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationMolecularly Imprinted Polymers for the Enrichment of Phenolic Compounds from Winemaking residues.
dc.relationMountain Research Center
dc.relationMountain Research Center
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.relationALICE - Associate Laboratory in Chemical Engineering
dc.relationLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
dc.relationLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectPhoto-molecularly imprinted sorbentpt_PT
dc.subject(E)-resveratrol purificationpt_PT
dc.subjectSorption-desorption processespt_PT
dc.subjectWinemaking residuespt_PT
dc.subjectCircular bioeconomypt_PT
dc.titleA simple process to purify (E)-resveratrol from grape stems with a photo-molecularly imprinted sorbentpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMolecularly Imprinted Polymers for the Enrichment of Phenolic Compounds from Winemaking residues.
oaire.awardTitleMountain Research Center
oaire.awardTitleMountain Research Center
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
oaire.awardTitleALICE - Associate Laboratory in Chemical Engineering
oaire.awardTitleLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
oaire.awardTitleLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/UI%2FBD%2F153688%2F2022/PT
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50020%2F2020/PT
oaire.citation.endPage16pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleFood and Bioproducts Processingpt_PT
oaire.citation.volume142pt_PT
oaire.fundingStreamOE
oaire.fundingStream6817 - DCRRNI ID
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person.familyNameBzainia
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person.identifier.ciencia-id6F16-0D30-3F93
person.identifier.ciencia-id8417-4D84-973B
person.identifier.orcid0000-0002-1835-1066
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person.identifier.ridM-8552-2013
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project.funder.nameFundação para a Ciência e a Tecnologia
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rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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