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Structural characterization of exopolysaccharides obtained from Porphyridium cruentum exhausted culture medium

2023Journal article Open access
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dc.contributor.authorCristofoli, Nathana L.
dc.contributor.authorRibeiro Lima, Alexandre
dc.contributor.authorRosa Da Costa, Ana
dc.contributor.authorEvtyugin, Dmitry
dc.contributor.authorSilva, Carlos
dc.contributor.authorVarela, João
dc.contributor.authorVieira, Margarida
dc.date.accessioned2023-04-04T12:27:25Z
dc.date.available2023-04-04T12:27:25Z
dc.date.issued2023
dc.description.abstractMicroalgae produce and secrete large quantities of polysaccharides into the culture medium that is discarded when biomass is separated. The main objective of this study was to add value to the exhausted culture medium (ECM) of Porphyridium cruentum through the recovery of extracellular polysaccharides (EPS) by different extracting and purifying methods for the future biotechnological applications. The ECM was submitted to pre-cipitation with cold absolute ethanol, using ultrasound, dialysis, and trichloroacetic acid (TCA) as purification methods. The purification provided a lower yield, with higher car-bohydrate content. The TCA purified sample presented up to twice as much total carbo-hydrates as the non-purified samples, mainly composed of xylose, galactose, and glucose. Scanning Electron Microscopy (SEM) images showed the smooth structure of P. cruentum EPS, in which TCA post-treatment and dialysis allowed obtaining larger and purest par-ticles, being a good candidate for film making. Microalgal polymeric by-products are a sustainable source to recover valuable compounds, and the purification treatment proved to be an important step to valorize this material.(c) 2023 The Authors. Published by Elsevier Ltd on behalf of Institution of Chemical Engineers. This is an open access article under the CC BY-NC-ND license (http://creati-vecommons.org/licenses/by-nc-nd/4.0/).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.fbp.2023.02.001pt_PT
dc.identifier.issn0960-3085
dc.identifier.urihttp://hdl.handle.net/10400.1/19395
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationDevelopment of intelligent packaging based on raw materials obtained from the rhodophyte Porphyridium cruentum
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectNatural polymerspt_PT
dc.subjectPolysaccharidespt_PT
dc.subjectRecoverypt_PT
dc.subjectMicroalgaept_PT
dc.subjectIndustrial applicationpt_PT
dc.subjectIndustrial applicationpt_PT
dc.titleStructural characterization of exopolysaccharides obtained from Porphyridium cruentum exhausted culture mediumpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleDevelopment of intelligent packaging based on raw materials obtained from the rhodophyte Porphyridium cruentum
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F149395%2F2019/PT
oaire.citation.endPage171pt_PT
oaire.citation.startPage162pt_PT
oaire.citation.titleFood and Bioproducts Processingpt_PT
oaire.citation.volume138pt_PT
person.familyNameLazzarotto Cristofoli
person.familyNameRibeiro Lima
person.familyNameRosa da Costa
person.familyNameVarela
person.familyNameVieira
person.givenNameNathana
person.givenNameAlexandre
person.givenNameAna M
person.givenNameJoão
person.givenNameMargarida
person.identifier305029
person.identifier.ciencia-id791B-AC54-445A
person.identifier.ciencia-idE113-B4FA-E4F2
person.identifier.ciencia-idA418-A85E-5DB1
person.identifier.ciencia-id3314-4EFC-1E4A
person.identifier.orcid0000-0002-0919-517X
person.identifier.orcid0000-0001-7983-518X
person.identifier.orcid0000-0003-0225-9537
person.identifier.orcid0000-0003-3101-693X
person.identifier.orcid0000-0003-2774-706X
person.identifier.ridE-2165-2012
person.identifier.ridM-4223-2013
person.identifier.ridE-1805-2012
person.identifier.scopus-author-id57211780814
person.identifier.scopus-author-id53986075100
person.identifier.scopus-author-id55741416000
person.identifier.scopus-author-id7202140775
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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