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Gelidium corneum and its solid by-product from agar extraction are sources of high-value and sustainable lipids

2025-11-06Journal article Open access
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dc.contributor.authorBatista, Joana
dc.contributor.authorLopes, Diana
dc.contributor.authorNeves, Bruna B.
dc.contributor.authorPais, Ana Rita
dc.contributor.authorPinho, Marisa
dc.contributor.authorMoreira, Ana S. P.
dc.contributor.authorConde, Tiago
dc.contributor.authorBonciarelli, Stefano
dc.contributor.authorGoracci, Laura
dc.contributor.authorDias, João
dc.contributor.authorAguiar, André
dc.contributor.authorDomingues, Pedro
dc.contributor.authorPereira, Hugo
dc.contributor.authorDomingues, Maria Rosário
dc.contributor.authorMelo, Tânia
dc.date.accessioned2025-12-18T14:01:11Z
dc.date.available2025-12-18T14:01:11Z
dc.date.issued2025-11-06
dc.description.abstractThe red alga Gelidium corneum is commonly harvested for agar extraction, producing significant biomass residue that remains underutilized. Gelidium corneum and its residue represent promising sources of high-value compounds, including lipid ingredients, encompassing omega-3 and omega-6 polyunsaturated fatty acids, with potential applications in foods and cosmetics. Algae lipids are quite diverse and complex, however the lipidome of G. corneum and its residue, along with their bioactive potential, remain largely unexplored. This study characterized the lipid signatures of G. corneum and its residue after agar extraction using reversed-phase liquid chromatography-tandem mass spectrometry (C18-RP-HPLC-MS/MS) and gas chromatography-mass spectrometry (GC-MS) for esterified fatty acids (FAs) profiling. Despite low lipid content (<1% dry weight), G. corneum exhibited a higher glycolipid content, while the residue was richer in phospholipids and triacylglycerols. Nine FAs were identified, with FA 20:4 n-6 and FA 20:5 n-3 more abundant in G. corneum, and FA 18:1 n-9 and FA 18:2 n-6 in the residue, highlighting their nutritional and functional values. Their lipid profile comprised more than 400 lipid molecular species, following the trend of more glycolipids in G. corneum and phospholipids in the residue. Complex lipids with bioactive properties were identified in both matrices, expanding our knowledge of the lipid signature of this seaweed. Gelidium corneum lipids showed higher antioxidant scavenging activity and great anti-inflammatory potential by inhibiting cyclooxygenase-2 activity. Although neither matrix inhibited α-amylase, residue lipids effectively inhibited α-glucosidase activity. These findings emphasize G. corneum and its residue as sources of high-value lipids for sustainable biotechnological applications, including foods, nutraceuticals and cosmetics.eng
dc.identifier.doi10.1007/s10811-025-03641-7
dc.identifier.eissn1573-5176
dc.identifier.issn0921-8971
dc.identifier.urihttp://hdl.handle.net/10400.1/27986
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationCentre for Environmental and Marine Studies
dc.relation.ispartofJournal of Applied Phycology
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectMacroalgae
dc.subjectRhodophyta
dc.subjectBy-products
dc.subjectPolar lipids
dc.subjectNeutral lipids
dc.subjectLC-MS
dc.subjectLipidomics
dc.titleGelidium corneum and its solid by-product from agar extraction are sources of high-value and sustainable lipidseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardTitleCentre for Environmental and Marine Studies
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FQUI%2F50006%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0094%2F2020/PT
oaire.citation.titleJournal of Applied Phycology
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameBatista
person.familyNamePereira
person.givenNameJoana
person.givenNameHugo
person.identifier282781
person.identifier.ciencia-id331E-84FD-2F34
person.identifier.orcid0000-0001-6243-5446
person.identifier.orcid0000-0002-1369-2099
person.identifier.ridE-9360-2015
person.identifier.scopus-author-id54080259900
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublicationd08cfa5a-715d-471a-b0a3-f24f9c00bf30
relation.isAuthorOfPublicationebcb2180-5235-4502-b562-cd1e7786e6f9
relation.isAuthorOfPublication.latestForDiscoveryebcb2180-5235-4502-b562-cd1e7786e6f9
relation.isProjectOfPublicationa755abb8-8a4a-4773-919b-1fbcfd77bad3
relation.isProjectOfPublication389df51b-8941-424c-b433-728d77201031
relation.isProjectOfPublication.latestForDiscoverya755abb8-8a4a-4773-919b-1fbcfd77bad3

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