Antioxidant capacity of extra-virgin olive oils View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2001-03

AUTHORS

Paolino Ninfali, Gianfranca Aluigi, Mara Bacchiocca, Mauro Magnani

ABSTRACT

In this study, the oxygen radical absorbance capacity (ORAC) of vegetable oils was investigated using a spectrofluorometric method, which measures the protection of the phenolic substances of the oil on the β-phycoerythrin fluorescence decay in comparison with Trolox. More than 97% of the phenolic substances was extracted from the oil using methanol, and the methanolic extract was then used for the ORAC and the total phenolics assay. We found a significant correlation between ORAC values of different olive oils and the total amount of phenolics. For extra-virgin olive oils, maximal ORAC values reached 6.20±0.31 μmol Trolox equivalent/g, while refined and seed oils showed values in the 1–1.5 μmol Trolox equivalent/g range. Our method is useful to assess the quality of olive oils and to predict, in combination with the rancidity tests, their stability against oxidation. More... »

PAGES

243-247

References to SciGraph publications

  • 1996-11. Antioxidant activity of tocopherols and phenolic compounds of virgin olive oil in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1991-09. Antioxidant effect of natural phenols on olive oil in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s11746-001-0252-9

    DOI

    http://dx.doi.org/10.1007/s11746-001-0252-9

    DIMENSIONS

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