EVALUATION OF THE TOTAL AMOUNT OF PHENOL GROUPS IN COMPLEX MIXTURES BY FOLIN'S AND ORAC-FLUORESCEIN METHODOLOGIES

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dc.contributor.authorMaria Campos, Ana
dc.contributor.authorLopez-Alarcon, Camilo
dc.contributor.authorLissi, Eduardo
dc.date.accessioned2025-01-24T00:07:07Z
dc.date.available2025-01-24T00:07:07Z
dc.date.issued2013
dc.description.abstractThe total number of phenolic HO groups in a mixture and their average reactivity are fundamental parameters in the evaluation of the capacity of the sample to remove potentially damaging free radicals. The total number of phenolic groups is generally determined by Folin's method and several competitive experiments have been proposed to estimate the reactivity of the sample. Among those stand the Oxygen Radical Absorbance Capacity (ORAC) methodologies. However, when fluorescein is employed as target molecule (ORAC-FL methodology) the index is more related to the number of phenolic groups than to their average reactivity. In the present work it is shown that both indexes correlate with the number of phenolic groups in pure compounds and with the total number of reactive OH groups in complex mixtures (beverages, infusions, fruits and vegetables). This leads to a fair correlation between Folin's and ORAC-FL indexes in these samples.
dc.description.funderDICYT (Universidad de Santiago de Chile)
dc.fuente.origenWOS
dc.identifier.issn0717-9707
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101896
dc.identifier.wosidWOS:000331238800050
dc.issue.numero4
dc.language.isoen
dc.pagina.final2147
dc.pagina.inicio2144
dc.revistaJournal of the chilean chemical society
dc.rightsacceso restringido
dc.subjectPhenols
dc.subjectFolin's method
dc.subjectORAC-Fluorescein
dc.subjectantioxidants
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleEVALUATION OF THE TOTAL AMOUNT OF PHENOL GROUPS IN COMPLEX MIXTURES BY FOLIN'S AND ORAC-FLUORESCEIN METHODOLOGIES
dc.typeartículo
dc.volumen58
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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