Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/75550
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dc.contributor.authorGongi, Wejdeneen_US
dc.contributor.authorCordeiro, Nereidaen_US
dc.contributor.authorPinchetti, Juan Luis Gómezen_US
dc.contributor.authorBen Ouada, Hatemen_US
dc.date.accessioned2020-11-16T10:10:51Z-
dc.date.available2020-11-16T10:10:51Z-
dc.date.issued2021en_US
dc.identifier.issn0921-8971en_US
dc.identifier.otherScopus-
dc.identifier.urihttp://hdl.handle.net/10553/75550-
dc.description.abstractMicroalgal extracellular polymeric substances (EPSs) are heteropolysaccharides that have characteristics suitable for industrial and biotechnological applications. Notably, they have strong anionic nature and high hydrophobicity. Nevertheless, systematic studies to demonstrate the viability of the production of EPSs on an industrial scale are still crucial. In this research, the chlorophyte Graesiella was grown on a raceway pond to view its EPS valorization. The biomass production achieved a maximum of 1.98 g L−1 and an EPS production of 1.6 g L−1 after six production days. The Graesiella EPSs with a molecular weight above 100 kDa are sulfated exopolymers containing mainly polysaccharide (70%) and protein (16%). The EPSs produced more stable emulsions with hydrocarbons and oils than Tween-20. The emulsification indices with n-hexane (88%) and maize oil (28%) indicate the EPSs’ strong emulsion-stabilizing capacity. The EPSs showed a peak flocculating percentage of 95% to kaolin suspension, with better flocculation performance than Al2(SO4)3 and alginate. Moreover, Graesiella EPSs had a significant effect on antimicrobial activity, significantly inhibiting fungal growth (71% for Botytis cinerea and 87% for Fusarium oxysporum), spore germination (100% of inhibition at a concentration of 1.8 g L−1), and mycelium growth (68% of inhibition). Also, Graesiella EPSs acted as a bactericide against Vibrio anguilaruim and Listonella anguilaruim (100% inhibition). EPSs were also found to have potent antioxidant activity compared with l-ascorbic acid. The obtained results open new perspectives to the further exploration of Graesiella sp. as a potential EPS producer, making it a promising candidate for numerous industrial applications.en_US
dc.languageengen_US
dc.relationRed de Excelencia en Biotecnología Azul (Algas) de la Región Macaronésica. Consolidación, Certificación y Transferenciaen_US
dc.relation.ispartofJournal of Applied Phycologyen_US
dc.sourceJournal of Applied Phycology [ISSN 0921-8971], n. 33, p. 343-356en_US
dc.subject241707 Algología (ficología)en_US
dc.subject.otherBiological Activitiesen_US
dc.subject.otherChlorophyceaeen_US
dc.subject.otherEcological Applicationsen_US
dc.subject.otherGraesiella Epssen_US
dc.subject.otherIndustrial Applicationsen_US
dc.titleProduction of exopolymer substances from the thermophilic chlorophyte Graesiella: industrial and ecological applicationsen_US
dc.typeinfo:eu-repo/semantics/Articleen_US
dc.typeArticleen_US
dc.identifier.doi10.1007/s10811-020-02299-7en_US
dc.identifier.scopus85095430717-
dc.contributor.authorscopusid57219779907-
dc.contributor.authorscopusid7004319456-
dc.contributor.authorscopusid57219776262-
dc.contributor.authorscopusid35110918200-
dc.identifier.eissn1573-5176-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.description.numberofpages14en_US
dc.utils.revisionen_US
dc.date.coverdateNoviembre 2020en_US
dc.identifier.ulpgcen_US
dc.contributor.buulpgcBU-BASen_US
dc.description.sjr0,601
dc.description.jcr3,404
dc.description.sjrqQ2
dc.description.jcrqQ1
dc.description.scieSCIE
dc.description.miaricds11,0
item.fulltextSin texto completo-
item.grantfulltextnone-
crisitem.project.principalinvestigatorGómez Pinchetti, Juan Luis-
crisitem.author.deptGIR IOCAG: Oceanografía Biológica y Algología Aplicada-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Biología-
crisitem.author.orcid0000-0003-4668-0462-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.fullNameGómez Pinchetti, Juan Luis-
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