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Automatic method for the determination of folin−ciocalteu reducing capacity in food products

2006Artigo científico Acesso restrito
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dc.contributor.authorMagalhães, Luís M.
dc.contributor.authorSegundo, Marcela A.
dc.contributor.authorReis, Salette
dc.contributor.authorLima, José L. F. C.
dc.contributor.authorRangel, António O. S. S.
dc.date.accessioned2010-11-02T14:34:09Z
dc.date.available2010-11-02T14:34:09Z
dc.date.issued2006
dc.description.abstractIn the present work, an automatic flow procedure based on multi-syringe flow injection analysis was developed for the assessment of Folin-Ciocalteu reagent (FCR) reducing capacity in several types of food products using gallic acid as the standard. Different strategies for mixing of sample and reagent were tested (continuous flow of FCR, merging zones, and intercalated zones approaches); lower reagent consumption and higher determination throughput were attained for the merging zones approach (100 íL of sample + 100 íL of FCR). The application of the proposed method to compounds with known antioxidant activity (both phenolic and nonphenolic) and to samples (wines, beers, teas, soft drinks, and fruit juices) provided results similar to those obtained by the conventional batch method. The detection limit was 0.6 mg L-1, and the determination frequency was about 12 h-1. Good repeatability was attained (RSD < 1.3%, n ) 10).por
dc.identifier.citationMAGALHÃES, Luís M ...[at al.] - Automatic method for the determination of folin−ciocalteu reducing capacity in food products. Journal of Agricultural and Food Chemistry. ISSN 0021-8561. Vol. 54, n. 15 (2006), p. 5241-5246por
dc.identifier.doi10.1021/jf060324s
dc.identifier.urihttp://hdl.handle.net/10400.14/3259
dc.language.isoengpor
dc.publisherAmerican Chemical Societypor
dc.subjectMulti-syringe flow injectionpor
dc.subjectFolin-Ciocalteu reducing capacitypor
dc.subjectPhenolic compoundspor
dc.titleAutomatic method for the determination of folin−ciocalteu reducing capacity in food productspor
dc.typejournal article
dspace.entity.typePublication
person.familyNameSegundo
person.familyNameLima
person.familyNameSantos Silva Rangel
person.givenNameMarcela
person.givenNameJosé
person.givenNameAntónio Osmaro
person.identifierR-000-8FJ
person.identifier.ciencia-id0A14-B7A6-E805
person.identifier.ciencia-id4811-9AA9-D673
person.identifier.ciencia-idD61D-7CFB-178A
person.identifier.orcid0000-0003-2938-0214
person.identifier.orcid0000-0002-8906-9826
person.identifier.orcid0000-0002-6486-8947
person.identifier.ridA-1009-2010
person.identifier.scopus-author-id6602384941
person.identifier.scopus-author-id10141079100
person.identifier.scopus-author-id7004827387
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication84c05a53-23fa-4f4b-b007-d1a5fc748d5a
relation.isAuthorOfPublication71f20aa3-d4ae-40c3-a9ef-27d88442d1e0
relation.isAuthorOfPublication467be022-fd9c-4549-aa48-48ebcc1098eb
relation.isAuthorOfPublication.latestForDiscovery467be022-fd9c-4549-aa48-48ebcc1098eb

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