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Production, preparation and characterization of microalgae-based biopolymer as a potential bioactive film

2020Journal article Open access
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dc.contributor.authorMorales-Jimenez, Monica
dc.contributor.authorGouveia, Luisa
dc.contributor.authorYanez-Fernandez, Jorge
dc.contributor.authorCastro-Munoz, Roberto
dc.contributor.authorBarragán, Blanca E.
dc.date.accessioned2020-09-22T16:07:23Z
dc.date.available2020-09-22T16:07:23Z
dc.date.issued2020
dc.description.abstractABSTRACT: Six microalgae strains were screened according to their biomass productivity and polymer synthesis, showing biomass productivity between 0.14 and 0.68 g/(L center dot d) for a 21-day growth period. Extracellular biopolymers from the spent culture media of Nostoc sp. (No), Synechocystis sp. (Sy), and Porphyridium purpureum (Pp) was obtained, and the yields of the clean biopolymer were 323, 204, and 83 mg/L, respectively. The crude biopolymer was cleaned up using a solid-phase extraction technique. The emulsification index E-24 values for the clean biopolymer were 77.5%, 68.8%, and 73.3% at 0.323, 0.083, and 0.204 mg/mL, respectively. The clean biopolymer of the No strain showed the highest fungal growth inhibition against Fusarium verticillioides (70.2%) and Fusarium sp. (61.4%) at 2.24 mg/mL. In general, transparent and flexible biofilms were prepared using biopolymers of No and Pp. The microstructural analysis revealed the presence of pores and cracks in the biofilms, and the average roughness Ra values are 68.6 and 86.4 nm for No and Pp, respectively, and the root mean square roughness Rq values are 86.2 and 107.2 nm for No and Pp, respectively.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMorales-Jimenez, M... [et.al.] - Production, preparation and characterization of microalgae-based biopolymer as a potential bioactive film. In: Coatings, 2020, Vol. 10 (2), article nº 120pt_PT
dc.identifier.doi10.3390/coatings10020120pt_PT
dc.identifier.eissn2079-6412
dc.identifier.urihttp://hdl.handle.net/10400.9/3311
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationPOCI-01-0247-FEDER-035234pt_PT
dc.relationLISBOA-01-0247-FEDER-035234pt_PT
dc.relationALG-01-0247-FEDER-035234pt_PT
dc.relationALG-05-3559-FSE-000010pt_PT
dc.relation.publisherversionhttps://doi.org/10.3390/coatings10020120pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMicroalgaept_PT
dc.subjectBiofilmspt_PT
dc.subjectPolysaccharidespt_PT
dc.titleProduction, preparation and characterization of microalgae-based biopolymer as a potential bioactive filmpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue2pt_PT
oaire.citation.titleCoatingspt_PT
oaire.citation.volume10pt_PT
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
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication63dcbe08-14df-4886-98b7-2945cbe0e062
relation.isAuthorOfPublication.latestForDiscovery63dcbe08-14df-4886-98b7-2945cbe0e062

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