Issue 50, 2015
From the journal:

RSC Advances

The ORAC (oxygen radical absorbance capacity) index does not reflect the capacity of antioxidants to trap peroxyl radicals

E. Dorta,a   E. Fuentes-Lemus,a   A. Aspée,b   E. Atala,a   H. Speisky,c   R. Bridi,a   E. Lissib  and  C. López-Alarcón*a  

* Corresponding authors

a Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, C.P. 782 0436, Santiago, Chile
E-mail: clopezr@uc.cl

b Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile

c Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Santiago, Chile

Abstract

In the present work we demonstrate from kinetic studies that under the experimental conditions proposed for the ORAC protocol, ORAC values do not correlate with the capacity of antioxidants to trap peroxyl radicals (ROO˙), suggesting a dominant role of alkoxyl radicals (RO˙) in the assay.

Graphical abstract: The ORAC (oxygen radical absorbance capacity) index does not reflect the capacity of antioxidants to trap peroxyl radicals

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Article information

DOI
https://doi.org/10.1039/C5RA01645B
Article type
Communication
Submitted
27 Jan 2015
Accepted
27 Apr 2015
First published
27 Apr 2015

RSC Adv., 2015,5, 39899-39902

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The ORAC (oxygen radical absorbance capacity) index does not reflect the capacity of antioxidants to trap peroxyl radicals

E. Dorta, E. Fuentes-Lemus, A. Aspée, E. Atala, H. Speisky, R. Bridi, E. Lissi and C. López-Alarcón, RSC Adv., 2015, 5, 39899 DOI: 10.1039/C5RA01645B

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