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Antioxidant activity of six Portuguese thyme species essential oils

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dc.contributor.authorDandlen, S. A.
dc.contributor.authorSofia Lima, A. S.
dc.contributor.authorMendes, M. D.
dc.contributor.authorMiguel, Maria Graça
dc.contributor.authorFaleiro, Leonor
dc.contributor.authorSousa, M. J.
dc.contributor.authorPedro, L. G.
dc.contributor.authorBarroso, J. G.
dc.contributor.authorFigueiredo, A. C.
dc.date.accessioned2015-06-15T14:53:34Z
dc.date.available2015-06-15T14:53:34Z
dc.date.issued2010
dc.description.abstractThe essential oils of Thymus caespititius, T. camphoratus, T. capitellatus, T. camosus, T. pulegioides, T. zygis subsp. zygis and T. zygis subsp. sylvestris collected in different 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 (IC(50) = 0.030 +/- 0.003 mg/ml), immediately followed by the oils isolated from T. zygis subsp. sylvestris collected in different regions of Portugal. IC(50) 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 effective 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 IC(50) < 0.5 mg/ml. The low oil amount did not allow IC(50) 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 Covao do Coelho, and of T. capitellatus from Sines. Copyright (C) 2010 John Wiley & Sons, Ltd.
dc.identifier.doihttps://dx.doi.org/10.1002/ffj.1972
dc.identifier.issn0882-5734
dc.identifier.otherAUT: MFA00238; MGM00322;
dc.identifier.urihttp://hdl.handle.net/10400.1/6337
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relation.isbasedonP-003-6ZK
dc.titleAntioxidant activity of six Portuguese thyme species essential oils
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FAGR-AAM%2F70136%2F2006/PT
oaire.citation.conferencePlaceSavigliano, Italy
oaire.citation.endPage155
oaire.citation.issue3
oaire.citation.startPage150
oaire.citation.titleFlavour and Fragrance Journal
oaire.citation.title40th International Symposium on Essential Oils
oaire.citation.volume25
oaire.fundingStream3599-PPCDT
person.familyNameMiguel
person.familyNameFaleiro
person.givenNameMaria da Graça
person.givenNameMaria Leonor
person.identifier252666
person.identifier.ciencia-id6110-6FE7-DF28
person.identifier.ciencia-id281D-5E01-F09A
person.identifier.orcid0000-0003-2507-4228
person.identifier.orcid0000-0002-3878-6948
person.identifier.scopus-author-id35562054500
person.identifier.scopus-author-id6507927018
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublication2507350f-9e60-4d4a-a096-53e58d93549c
relation.isAuthorOfPublication5361e29a-3b79-4ce8-9f87-0c667d60588d
relation.isAuthorOfPublication.latestForDiscovery2507350f-9e60-4d4a-a096-53e58d93549c
relation.isProjectOfPublication29620a20-d3cf-4785-9dd1-51e741f539e7
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