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Green approach for the valorization of microalgae Tetradesmus obliquus

2021Journal article Restricted
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dc.contributor.authorGouveia, Luisa
dc.contributor.authorMolnar Jazić, Jelena
dc.contributor.authorFerreira, Alice
dc.contributor.authorMaletić, Snežana
dc.contributor.authorCvetković, Dragoljub
dc.contributor.authorVidović, Senka
dc.contributor.authorVladić, Jelena
dc.date.accessioned2022-02-23T12:52:14Z
dc.date.available2022-02-23T12:52:14Z
dc.date.issued2021
dc.description.abstractThe main goal of this study was to develop an efficient, green approach for the valorization of Tetradesmus obliquus biomass, with zero waste. This microalga was selected because it is widespread, resistant, easy for cultivation, and fast-growing. In the first step, supercritical carbon dioxide (ScCO2) extraction followed by rapid gas decompression was used for the extraction of biomass. The following step was to apply ultrasound-assisted (UA), microwave-assisted (MA), and subcritical water (SW) extraction on the ScCO2-treated biomass to determine the most efficient processing technology. SW demonstrated to be a superior technique over MW and UA with regard to extraction yield and antioxidant content. Moreover, the chemical and microbiological profiles of SW extracts were determined to evaluate their potential and safety. In addition, to create a procedure with zero waste, the solid waste after SW extraction (residue) was analyzed. The organic profile of extracts and residues contained compounds that belong to groups of aliphatic saturated hydrocarbons, aliphatic unsaturated hydrocarbons, alkylated hydrocarbons, ketones, phenols, and esters. Furthermore, these compounds can be applied in different industries including the pharmaceutical and cosmetic industries. Additionally, the content of metals in residues indicated that this material can be used as animal feed and in agriculture. Finally, a complete reduction of microorganisms present in the initial biomass was obtained for the extracts and residues, indicating their safety.pt_PT
dc.description.sponsorshipALGAVALOR - Lisboa-01-0247-FEDER-035234; LISBOA-01-0145-FEDER-02205
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.scp.2021.100556pt_PT
dc.identifier.issn2352-5541
dc.identifier.urihttp://hdl.handle.net/10400.1/17598
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationBiodiversity and Bioprospection of Biosurfactants In Saline environments
dc.subjectTetradesmus obliquuspt_PT
dc.subjectMicroalgapt_PT
dc.subjectSubcritical waterpt_PT
dc.subjectExtractionpt_PT
dc.titleGreen approach for the valorization of microalgae Tetradesmus obliquuspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleBiodiversity and Bioprospection of Biosurfactants In Saline environments
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FBII-BIO%2F5554%2F2020/PT
oaire.citation.startPage100556pt_PT
oaire.citation.titleSustainable Chemistry and Pharmacypt_PT
oaire.citation.volume24pt_PT
oaire.fundingStream3599-PPCDT
person.familyNameGouveia
person.givenNameLuisa
person.identifierH-4046-2011
person.identifier.ciencia-id581B-924A-84DD
person.identifier.orcid0000-0003-0196-6360
person.identifier.scopus-author-id7004135834
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationf559d57b-b659-4d65-bf6c-698bf99e729b
relation.isAuthorOfPublication.latestForDiscoveryf559d57b-b659-4d65-bf6c-698bf99e729b
relation.isProjectOfPublication46e1907a-b9b7-4239-bd8e-ccb8aab0db6c
relation.isProjectOfPublication.latestForDiscovery46e1907a-b9b7-4239-bd8e-ccb8aab0db6c

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