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Infusions of Portuguese medicinal plants: dependence of final antioxidant capacity and phenol content on extraction features

2007Journal article Restricted access
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dc.contributor.authorGião, Maria S.
dc.contributor.authorGonzález-Sanjosé, Maria L.
dc.contributor.authorRivero-Pére, Maria D.
dc.contributor.authorPereira, Cláudia I.
dc.contributor.authorPintado, Manuela E.
dc.contributor.authorMalcata, F. Xavier
dc.date.accessioned2011-10-22T11:16:53Z
dc.date.available2011-10-22T11:16:53Z
dc.date.issued2007
dc.description.abstractBACKGROUND: Aqueous extracts of most medicinal plants traditionally employed in Portugal (at the ratio of 1 g plant: 110mL water) have been assayed for total antioxidant capacity and phenol content, in order to elucidate their claimed medicinal features. RESULTS: The antioxidant activity was assessed by theABTS•+ method; the ascorbic acid equivalent values ranged from 1.4280 ± 0.1261 g L−1 for avocado (Persea americana (Lauraceae)) obtained by infusion of powder, down to 0.0027 ± 0.0012 g L−1 for olive (Olea europaea (Oleaceae)) obtained by infusion of leaves. Total phenol content was determined by the Folin–Ciocalteu procedure; the gallic acid equivalent values ranged from 0.5541 ± 0.0289 g L−1 for avocado obtained by infusion of powder, down to 0.0053 ± 0.0014 g L−1 for olive obtained by boiling leaves. A good correlation between total antioxidant capacity and total phenol content was found. CONCLUSION: The method of powder infusion should be chosen if high concentration of antioxidants are sought. On the other hand, a high antioxidant capacity and a high phenol content correlate well with the empirically established (and widely publicised) capacity to treat respiratory infections.por
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.citation"Journal of the Science of Food and Agriculture". ISSN 0022-5142. 87: 14 (2007) 2638-2647por
dc.identifier.doi10.1002/jsfa.3023
dc.identifier.eid35748954646
dc.identifier.pmid20836172
dc.identifier.urihttp://hdl.handle.net/10400.14/6787
dc.identifier.wos000250618000013
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherWiley-Blackwellpor
dc.subjectPersea americana (Lauraceae)por
dc.subjectPowderpor
dc.subjectLeavespor
dc.subjectABTS•+por
dc.subjectFolin–Ciocalteupor
dc.titleInfusions of Portuguese medicinal plants: dependence of final antioxidant capacity and phenol content on extraction featurespor
dc.typejournal article
dspace.entity.typePublication
person.familyNamePintado
person.familyNameMalcata
person.givenNameMaria Manuela
person.givenNameFrancisco
person.identifier456608
person.identifier.ciencia-id2F13-AAE0-3405
person.identifier.ciencia-id1B13-38A5-35F5
person.identifier.orcid0000-0002-0760-3184
person.identifier.orcid0000-0003-3073-1659
person.identifier.ridF-5696-2013
person.identifier.scopus-author-id7004483898
person.identifier.scopus-author-id7102542478
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationba387c7d-27c9-4016-895c-b35597e91ebc
relation.isAuthorOfPublicationa06c00da-0e2f-4434-8ede-4d7b22c0dfe9
relation.isAuthorOfPublication.latestForDiscoverya06c00da-0e2f-4434-8ede-4d7b22c0dfe9

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