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Valorisation of microalga Tetradesmus obliquus grown in brewery wastewater using subcritical water extraction towards zero waste

2022-06Journal article Open access
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dc.contributor.authorFerreira, Alice
dc.contributor.authorJazic, Jelena Molnar
dc.contributor.authorGouveia, Luisa
dc.contributor.authorMaletic, Snezana
dc.contributor.authorTomic, Milan
dc.contributor.authorAgbaba, Jasmina
dc.contributor.authorVladic, Jelena
dc.date.accessioned2022-06-29T10:51:29Z
dc.date.available2022-06-29T10:51:29Z
dc.date.issued2022-06
dc.description.abstractABSTRACT: In this study, green technology was applied for extraction of compounds from wastewater-grown microalga biomass with the final goal of obtaining microbiologically safe products within a sustainable biorefinery process with zero waste. Tetradesmus obliquus biomass resulting from brewery wastewater treatment, with (To-CO2) and without CO2 supplementation (To), was submitted to subcritical water extraction (SWE) at temperatures 120-220 degrees C for 10 min. The impact of the different SWE conditions in the obtained liquid extracts and solid residues were investigated for metal content and chemical and microbiological profiles. Gas chromatography-mass spectrometry analysis indicated that of T. obliquus extracts and residues are valuable sources of aliphatic saturated, unsaturated, and alkylated (mostly methylated) hydrocarbons, phenols, esters, and ketones. Polyphenolic content and antioxidant activity were enhanced approximately 4 times by increasing the temperature from 120 to 220 degrees C. Also, the content of polyphenols doubled when T. obliquus was supplemented with CO2 for all the tested temperatures (To: 0.249-1.016 mg GAE mL(-1); To-CO2: 0.437 - 1.767 mg GAE mL(-1)). The microbiological analysis determined that liquid extracts and residues represent safe sources of bioactive components that can be used in different industries. In addition, the lower content of heavy metals in residues suggests the possibility of using the solid waste as animal feed or soil conditioner in agricultural applications.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFerreira, Alice... [et.al.] - Valorisation of microalga Tetradesmus obliquus grown in brewery wastewater using subcritical water extraction towards zero waste. In: Chemical Engineering Journal, 2022, Vol. 437 (1), article nº 135324pt_PT
dc.identifier.doi10.1016/j.cej.2022.135324pt_PT
dc.identifier.eissn1873-3212
dc.identifier.issn1385-8947
dc.identifier.urihttp://hdl.handle.net/10400.9/3869
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationSerbia 142-451-2576/2019-02pt_PT
dc.relationBiodiversity and Bioprospection of Biosurfactants In Saline environments
dc.relationBiomass and Bioenergy Research Infrastructure
dc.relationDevelopment of agricultural bioproducts biofertilizers, biostimulants and biopesticides from piggery wastewater treatment-based microalgae
dc.relation.publisherversionhttps://doi.org/10.1016/j.cej.2022.135324pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMicroalgaept_PT
dc.subjectTetradesmus obliquuspt_PT
dc.subjectBiomasspt_PT
dc.subjectSubcritical waterpt_PT
dc.subjectGreen chemistrypt_PT
dc.subjectZero wastept_PT
dc.titleValorisation of microalga Tetradesmus obliquus grown in brewery wastewater using subcritical water extraction towards zero wastept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleBiodiversity and Bioprospection of Biosurfactants In Saline environments
oaire.awardTitleBiomass and Bioenergy Research Infrastructure
oaire.awardTitleDevelopment of agricultural bioproducts biofertilizers, biostimulants and biopesticides from piggery wastewater treatment-based microalgae
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FBII-BIO%2F5554%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9444 - RNIIIE/PINFRA%2F22059%2F2016/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F144122%2F2019/PT
oaire.citation.titleChemical Engineering Journalpt_PT
oaire.citation.volume437pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream9444 - RNIIIE
person.familyNameFerreira
person.familyNameGouveia
person.familyNameMaletic
person.familyNameVladic
person.givenNameAlice
person.givenNameLuisa
person.givenNameSnezana
person.givenNameJelena
person.identifierH-4046-2011
person.identifier.ciencia-idD115-8FF3-9097
person.identifier.ciencia-id581B-924A-84DD
person.identifier.ciencia-id5E11-D9E4-6586
person.identifier.orcid0000-0002-2397-3943
person.identifier.orcid0000-0003-0196-6360
person.identifier.orcid0000-0002-5026-3365
person.identifier.orcid0000-0002-3891-7266
person.identifier.ridH-2107-2016
person.identifier.scopus-author-id7004135834
person.identifier.scopus-author-id57194950912
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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