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Antioxidant activity of six Portuguese thyme species essential oils

dc.contributor.authorDandlen, S. Anahi
dc.contributor.authorLima, Ana Sofia
dc.contributor.authorMendes, Marta D.
dc.contributor.authorMiguel, Maria da Graça
dc.contributor.authorFaleiro, Maria Leonor
dc.contributor.authorSousa, Maria João
dc.contributor.authorPedro, Luís G.
dc.contributor.authorBarroso, José G.
dc.contributor.authorFigueiredo, Ana Cristina
dc.date.accessioned2011-05-23T15:20:07Z
dc.date.available2011-05-23T15:20:07Z
dc.date.issued2010
dc.description.abstractThe essential oils of Thymus caespititius, T. camphoratus, T. capitellatus, T. carnosus, T. pulegioides, T. zygis subsp. zygis and T. zygis subsp. sylvestris collected in diff erent regions of Portugal, including the Azores islands, were evaluated for preventing lipid peroxidation and scavenging free radicals, and hydroxyl and superoxide anions. T. zygis subsp. zygis oil possessed the best capacity for preventing lipid peroxidation (IC50 = 0.030 ± 0.003 mg/ml), immediately followed by the oils isolated from T. zygis subsp. sylvestris collected in diff erent regions of Portugal. IC50 values ranged from 0.066 ± 0.003 to 0.087 ± 0.001 mg/ml in oils isolated from samples from Alcanena and Duas Igrejas, respectively. The oils isolated from T. zygis subsp. sylvestris, independent of the harvesting region, were shown to be the most eff ective for scavenging free radicals (0.358– 0.453 mg/ml). The best capacity for scavenging hydroxyl radicals was found in the oils of T. camphoratus collected in Espartal and of T. caespititius of Lordelo, with IC50 < 0.5 mg/ml. The low oil amount did not allow IC50 values for the superoxide anion scavenging determination, therefore considering a unique oil concentration (5 mg/ml), the highest inhibition percentages (>50%) were registered with the essential oils of T. zygis subsp. sylvestris from Duas Igrejas and Covão do Coelho, and of T. capitellatus from Sines. Copyright © 2010 John Wiley & Sons, Ltd.por
dc.identifier.citationDandlen, S. Anahi; Lima, A. Sofia; D. Mendes, Marta; Miguel, M. Graça; Faleiro, M. Leonor; Sousa, M. João; Pedro, Luis G; G. Barroso, José; Figueiredo, A. Cristina (2010). Antioxidant activity of six Portuguese thyme species essential oils. Flavour and Fragrance Journal. ISSN 1099-1026. 25:3, p. 150-155por
dc.identifier.doi10.1002/ffj.1972
dc.identifier.issn1099-1026
dc.identifier.urihttp://hdl.handle.net/10198/4474
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherJohn Wileypor
dc.subjectThymuspor
dc.subjectLamiaceaepor
dc.subjectLabiataepor
dc.subjectAntioxidant activitypor
dc.subjectEssential oilspor
dc.titleAntioxidant activity of six Portuguese thyme species essential oilspor
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FAGR-AAM%2F70136%2F2006/PT
oaire.citation.endPage155por
oaire.citation.issueFlavour Fragr. J. 2010, 25, 150–155por
oaire.citation.startPage150por
oaire.citation.titleFlavour Fragr. J.por
oaire.fundingStream3599-PPCDT
person.familyNameLima
person.familyNameSousa
person.givenNameAna Sofia
person.givenNameMaria João
person.identifier.ciencia-idBA18-196F-F34C
person.identifier.ciencia-idD91E-3571-3979
person.identifier.orcid0000-0002-4740-1552
person.identifier.orcid0000-0002-9946-4926
person.identifier.ridA-8917-2016
person.identifier.scopus-author-id35074306100
person.identifier.scopus-author-id55230282700
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typearticlepor
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