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Arbutus unedo L. leaves as source of phytochemicals with bioactive properties

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dc.contributor.authorMalheiro, Ricardo
dc.contributor.authorSá, Olga
dc.contributor.authorPereira, Eric Carvalho
dc.contributor.authorAguiar, Cristina
dc.contributor.authorBaptista, Paula
dc.contributor.authorPereira, J.A.
dc.date.accessioned2014-09-22T10:29:12Z
dc.date.available2014-09-22T10:29:12Z
dc.date.issued2012
dc.description.abstractIn recent years the strawberry tree (Arbutus unedo L.) is being gradually replaced by other species with higher economic value. With the ultimate goal of selecting superior genotypes, the present work was initiated to study the antioxidant and antimicrobial activities, and total phenolic content in 19 different genotypes of A. unedo leaves from the Trás-os-Montes region of Portugal. The genotype Braganc¸ a 1 contains higher total phenolic content (215.0 mg GAE/gextract) whereas the Vila Boa 4 genotype shows lower total phenolic content (148.0 mg GAE/gextract). In both methods tested to evaluate the antioxidant activity, Vila Verde and Donai displayed the highest antioxidant capacity (EC50 values of 0.088 and 0.090 mg/mL, respectively, for DPPH; EC50 values of 0.233 and 0.245 mg/mL, respectively, for reducing power assay) while Vila Boa 2 reported the lowest antioxidant potential (EC50 values of 0.142 and 0.378 mg/mL, respectively, in DPPH and reducing power methods). Linear negative correlations were established between the total phenol contents and the EC50 values for both of the antioxidant activity methods tested. Preliminary assays for antimicrobial potential showed that extracts from A. unedo leaves display antibacterial activity, with MIC values of 1 and 5 mg/mL for some Grampositive and Gram-negative bacteria, respectively. Taken together, the results suggest that A. unedo leaves are a potential source of natural compounds with valuable bioactive properties that could be explored by the pharmaceutical, chemical and food industries.por
dc.identifier.citationMalheiro, R.; Sá, Olga; Pereira, Eric Carvalho; Aguiar, Cristina; Baptista, Paula; Pereira, J.A. (2012). Arbutus unedo L. leaves as source of phytochemicals with bioactive properties. Industrial Crops and Products. ISSN 0926-6690. 37:1, p. 473-478por
dc.identifier.doi10.1016/j.indcrop.2011.07.023
dc.identifier.issn0926-6690
dc.identifier.urihttp://hdl.handle.net/10198/10518
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.subjectArbutus unedo L. leavespor
dc.subjectAqueous extractspor
dc.subjectAntioxidant activitypor
dc.subjectAntimicrobial propertiespor
dc.subjectTotal phenolspor
dc.titleArbutus unedo L. leaves as source of phytochemicals with bioactive propertiespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage478por
oaire.citation.issue1por
oaire.citation.startPage473por
oaire.citation.titleIndustrial Crops and Productspor
oaire.citation.volume37por
person.familyNameMalheiro
person.familyNameBaptista
person.familyNamePereira
person.givenNameRicardo
person.givenNamePaula
person.givenNameJosé Alberto
person.identifier.ciencia-id7D11-FE1E-CD0F
person.identifier.ciencia-id611F-80B2-A7C1
person.identifier.orcid0000-0002-7342-0511
person.identifier.orcid0000-0001-6331-3731
person.identifier.orcid0000-0002-2260-0600
person.identifier.ridL-6798-2014
person.identifier.scopus-author-id25650218300
person.identifier.scopus-author-id14051688000
person.identifier.scopus-author-id57204366348
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication0fa7974d-abd3-444b-9a7e-16d16530a0f7
relation.isAuthorOfPublication3f35226a-b17a-4f7d-8da1-3297105cbfe9
relation.isAuthorOfPublication7932162e-a2da-4913-b00d-17babbe51857
relation.isAuthorOfPublication.latestForDiscovery7932162e-a2da-4913-b00d-17babbe51857

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