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Valorisation of Sargassum muticum through the extraction of phenolic compounds using eutectic solvents and intensification techniques

2023Journal article Open access
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dc.contributor.authorJesus, Bárbara C.
dc.contributor.authorSáenz de Miera, Blanca
dc.contributor.authorSantiago, Rubén
dc.contributor.authorMartins, Alice
dc.contributor.authorPedrosa, Rui
dc.contributor.authorGonzalez-Miquel, Maria
dc.contributor.authorMarrucho, Isabel M.
dc.date.accessioned2023-11-29T10:44:12Z
dc.date.available2023-11-29T10:44:12Z
dc.date.issued2023
dc.description.abstractSeaweeds are naturally abundant and spread all over the globe. They have several biologically active secondary metabolites of great interest. In this work, Sargassum muticum was the algae employed as biomass and the aim was to extract phenolic compounds (PCs) using eutectic solvents (ESs). Several betaine-based, proline-based, and choline-based ESs were tested for the extraction of PCs. All extracts were evaluated according to the total phenolic content (TPC), total flavonoid content (TFC) and antioxidant activity (DPPH). Afterwards, the extracts were characterized using HPLC in terms of 9 target PCs (gallic acid, 3,4-dihydroxybenzoic acid, caffeic acid, syringic acid, p-coumaric acid, ferulic acid, salicylic acid, catechin and quercetin). Proline combined with propylene glycol (Pro[thin space (1/6-em)]:[thin space (1/6-em)]PPG) exhibited a higher yield according to HPLC results, followed by proline[thin space (1/6-em)]:[thin space (1/6-em)]1,2-butanediol (Pro[thin space (1/6-em)]:[thin space (1/6-em)]1,2-But) and choline[thin space (1/6-em)]:[thin space (1/6-em)]citric acid (ChCl[thin space (1/6-em)]:[thin space (1/6-em)]CA). Pro[thin space (1/6-em)]:[thin space (1/6-em)]PPG also presented high selectivity towards salicylic acid, while ChCl[thin space (1/6-em)]:[thin space (1/6-em)]CA towards gallic acid. Optimization studies of water content and temperature were performed for the three best ESs, the optimum conditions being 30% (v/v) water and 60 °C extraction temperature. Ultrasound-assisted extraction (UAE) and microwave-assisted extraction (MAE) were two intensification methods evaluated to enhance the extraction process, proving their ability to reduce the extraction time when compared with the conventional solid–liquid extraction (SLE) process. In particular, Pro[thin space (1/6-em)]:[thin space (1/6-em)]PPG-based MAE provided a significantly higher extraction yield in comparison with conventional extraction and with the other extraction solvents. In summary, the combination of ESs with intensification techniques was shown to be a valuable valorization strategy of a marine macroalgae waste, in particular Sargassum muticum.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationJesus, B.C., Sáenz de Miera, B., Santiago, R., Martins, A., Pedrosa, R., González-Miquel, M., & Marrucho, I.M. (2023). Valorisation of Sargassum muticum through the extraction of phenolic compounds using eutectic solvents and intensification techniques. RSC Sustainability, 2023(1), 1245-1258. https://doi.org/10.1039/d3su00051fpt_PT
dc.identifier.doi10.1039/d3su00051fpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.8/8972
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherRoyal Society of Chemistrypt_PT
dc.relationCentro de Química Estrutural
dc.relationCentro de Química Estrutural
dc.relationInstitute of Molecular Sciences
dc.relationMarine and Environmental Sciences Centre
dc.relationMarine and Environmental Sciences Centre
dc.relationAquatic Research Infrastructure Network
dc.relation.publisherversionhttps://pubs.rsc.org/en/content/articlelanding/2023/SU/D3SU00051Fpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSeaweedspt_PT
dc.subjectSargassum muticumpt_PT
dc.subjectPhenolic compounds extractionpt_PT
dc.titleValorisation of Sargassum muticum through the extraction of phenolic compounds using eutectic solvents and intensification techniquespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentro de Química Estrutural
oaire.awardTitleCentro de Química Estrutural
oaire.awardTitleInstitute of Molecular Sciences
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardTitleAquatic Research Infrastructure Network
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00100%2F2020/PT
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oaire.citation.endPage1258pt_PT
oaire.citation.issue1pt_PT
oaire.citation.startPage1245pt_PT
oaire.citation.titleRSC Sustainabilitypt_PT
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person.familyNameJesus
person.familyNameSáenz de Miera
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person.familyNameGonzalez-Miquel
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person.givenNameBárbara C.
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person.givenNameMaria
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project.funder.identifierhttp://doi.org/10.13039/501100001871
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rcaap.rightsopenAccesspt_PT
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