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Total phenols, antioxidant potential and antimicrobial activity of walnut (Juglans regia L.) green husks

2008Artigo científico Acesso aberto
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dc.contributor.authorOliveira, Ivo
dc.contributor.authorSousa, Anabela
dc.contributor.authorFerreira, Isabel C.F.R.
dc.contributor.authorBento, Albino
dc.contributor.authorEstevinho, Leticia M.
dc.contributor.authorPereira, J.A.
dc.date.accessioned2008-09-04T09:03:23Z
dc.date.available2008-09-04T09:03:23Z
dc.date.issued2008
dc.description.abstractThe total phenols content and antioxidant and antimicrobial activities were studied in walnut (Juglans regia L.) green husks aqueous extracts of five different cultivars (Franquette, Mayette, Marbot, Mellanaise and Parisienne). Total phenols content was determined by colorimetric assay and their amount ranged from 32.61 mg/g of GAE (cv. Mellanaise) to 74.08 mg/g of GAE t (cv. Franquette). The antioxidant capacity of aqueous extracts was assessed through reducing power assay, scavenging effects on DPPH (2,2-diphenyl- 1-picrylhydrazyl) radicals and b-carotene linoleate model system. A concentration-dependent antioxidative capacity was verified in reducing power and DPPH assays, with EC50 values lower than 1 mg/ mL for all the tested extracts. The antimicrobial capacity was screened against Gram positive and Gram negative bacteria, and fungi. All the extracts inhibited the growth of Gram positive bacteria, being Staphylococcus aureus the most susceptible one with MIC of 0.1 mg/mL for all the extracts. The results obtained indicate that walnut green husks may become important in the obtainment of a noticeable source of compounds with health protective potential and antimicrobial activity.en
dc.identifier.citationOliveira, Ivo; Sousa, A.; Ferreira, Isabel C.F.R.; Bento, Albino; Estevinho, Leticia M.; Pereira, J.A. (2008). Total phenols, antioxidant potential and antimicrobial activity of walnut (Juglans regia L.) green husks. Food and Chemical Toxicology. ISSN 0278-6915. 46:7, p. 2326-2331en
dc.identifier.doi10.1016/j.fct.2008.03.017
dc.identifier.issn0278-6915
dc.identifier.urihttp://hdl.handle.net/10198/755
dc.language.isoengen
dc.peerreviewedyes
dc.publisherElsevieren
dc.subjectWalnut green husksen
dc.subjectTotal phenolsen
dc.subjectAntimicrobial activityen
dc.subjectAntioxidant activityen
dc.titleTotal phenols, antioxidant potential and antimicrobial activity of walnut (Juglans regia L.) green husksen
dc.typejournal article
dspace.entity.typePublication
person.familyNameFerreira
person.familyNameBento
person.familyNameEstevinho
person.familyNamePereira
person.givenNameIsabel C.F.R.
person.givenNameAlbino
person.givenNameLetícia M.
person.givenNameJosé Alberto
person.identifier144781
person.identifier.ciencia-id9418-CF95-9919
person.identifier.ciencia-idD516-325A-9AD7
person.identifier.ciencia-idBA14-09D6-A406
person.identifier.ciencia-id611F-80B2-A7C1
person.identifier.orcid0000-0003-4910-4882
person.identifier.orcid0000-0001-5215-785X
person.identifier.orcid0000-0002-9249-1948
person.identifier.orcid0000-0002-2260-0600
person.identifier.ridE-8500-2013
person.identifier.ridN-9706-2016
person.identifier.ridL-6798-2014
person.identifier.scopus-author-id36868826600
person.identifier.scopus-author-id35247694000
person.identifier.scopus-author-id6506577664
person.identifier.scopus-author-id57204366348
rcaap.rightsopenAccess
rcaap.typearticleen
relation.isAuthorOfPublicationbd0d1537-2e03-41fb-b27a-140af9c35db8
relation.isAuthorOfPublication233115be-9d46-49d0-8b7d-2d64406d64a0
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relation.isAuthorOfPublication.latestForDiscoverybd0d1537-2e03-41fb-b27a-140af9c35db8

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