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Bioactivity screening of Aurantiochytrium sp. for antioxidant activities

2018Conference object Open access
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dc.contributor.authorPinheiro, Joaquina
dc.contributor.authorGarcia, Adriana
dc.contributor.authorPaulo, Maria
dc.contributor.authorCoutinho, Joana
dc.contributor.authorBaptista, Teresa M.
dc.contributor.authorBernardino, Susana M.
dc.contributor.authorTecelão, Carla
dc.contributor.authorGil, Maria M.
dc.contributor.authorLemos, Marco F.L.
dc.date.accessioned2019-10-21T14:55:55Z
dc.date.available2019-10-21T14:55:55Z
dc.date.issued2018
dc.descriptionThis study had the financial support by Research and Technological Development Incentive Program – Algavalue Project n.º 17680 – Valorização dos subprodutos do processo biotecnológico de produção de esqualeno e DHA pela microalga Aurantiochytrium sp. – and the strategic project UID/MAR/04292/2013 granted to MARE.
dc.description.abstractAurantiochytrium sp. is a heterotrophic microalgae that, in certain growth conditions, besides producing significant amounts of squalene, may potentially produce other bioactive compounds with high value and commercial interest such as docosahexaenoic acid (DHA), carotenoids, among others. Antioxidant compounds, naturally occurring in microalgae sources, have been identified as free radical or active oxygen scavengers, with beneficial effects on oxidation and oxidative damage inhibition in human body and foods. Several in vitro methodologies have been proposed to evaluate the antioxidant capacity, such as free radicals: 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2 -azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS+), and reactive species including hydrogen peroxide (H2O2), singlet oxygen (O2), and superoxide anion (O2-) (Balboa et al., 2013). The main objective of the present study was to evaluate the antioxidant activity of aqueous and ethanolic extracts of Aurantiochytrium sp., by means of different methodologies: reducing and scavenging activity by total phenolics content (TPC, Singleton & Rossi, 1965), DPPH (Custódio et al., 2012), and oxygen radical absorbance capacity (ORAC, Dávalos et al., 2004). The obtained results indicated that the microalgae Aurantiochytrium sp. is rich in antioxidant compounds, by reducing activity through total phenolics and DPPH, as well as scavenging activity by ORAC. Moreover, it is evident the higher selectivity of ethanol as solvent for the extraction of antioxidants compounds. The potential of this microalgae biomass as a good, natural and sustainable source for use as a functional food ingredient is evident, representing an opportunity with additional benefits due to the antioxidant role in diseases prevention and treatment.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPinheiro J, Paulo M, Coutinho J, Baptista TM, Bernardino SM, Tecelão C, Gil MM and Lemos M (2019). Bioactivity screening of Aurantiochytrium sp. for antioxidant activities. Front. Mar. Sci. Conference Abstract: IMMR'18 | International Meeting on Marine Research 2018. doi: 10.3389/conf.FMARS.2018.06.00088pt_PT
dc.identifier.doi10.3389/conf.FMARS.2018.06.00088
dc.identifier.urihttp://hdl.handle.net/10400.8/4225
dc.language.isoengpt_PT
dc.peerreviewednopt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAurantiochytrium sp.pt_PT
dc.subjectantioxidant capacitypt_PT
dc.subjectNatural sourcept_PT
dc.subjectDPPHpt_PT
dc.subjectORACpt_PT
dc.subjectTotal phenolic contentpt_PT
dc.titleBioactivity screening of Aurantiochytrium sp. for antioxidant activitiespt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMAR%2F04292%2F2013/PT
oaire.citation.titleIMMR'18 | International Meeting on Marine Research 2018pt_PT
oaire.fundingStream5876
person.familyNamePinheiro
person.familyNameBaptista
person.familyNameBernardino
person.familyNameTecelão
person.familyNameGil
person.familyNameLemos
person.givenNameJoaquina
person.givenNameTeresa
person.givenNameSusana
person.givenNameCarla
person.givenNameMaria M
person.givenNameMarco
person.identifier556456
person.identifier996337
person.identifier.ciencia-idB113-2D80-406B
person.identifier.ciencia-idA61F-25C1-034A
person.identifier.ciencia-idE418-2945-9EB6
person.identifier.ciencia-id9B1D-4AC0-1B03
person.identifier.ciencia-id7313-A289-DF48
person.identifier.orcid0000-0001-9319-2651
person.identifier.orcid0000-0003-1168-7461
person.identifier.orcid0000-0001-9454-3281
person.identifier.orcid0000-0003-2423-0495
person.identifier.orcid0000-0002-8008-9839
person.identifier.orcid0000-0001-9887-1864
person.identifier.ridO-4858-2015
person.identifier.ridF-7951-2011
person.identifier.scopus-author-id25228814000
person.identifier.scopus-author-id14824775000
person.identifier.scopus-author-id7801371939
person.identifier.scopus-author-id12785024700
person.identifier.scopus-author-id7006042884
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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