Article (Scientific journals)
The Total Antioxidant Capacity of Foods: a reappraisal. Application to commercial orange juices
PINCEMAIL, Joël; Tabart, Jessica; Defraigne, Jean-Olivier et al.
2015In Journal of Antioxidant Activity, 1
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Keywords :
DPPH; ORAC; ascorbic acid; phenolic compounds; antioxidant
Abstract :
[en] Since a few years, more and more attention has been specifically given to dietary antioxidants as agents promoting health and preventing the incidence of diseases. As part of these efforts, analytical methods and assays have been developed to measure the antioxidant content in food substances. In this paper, the antioxidant capacity of 17 orange juices is determined by various assays (DPPH, ORAC, heamolysis, xanthine/xanthine oxidase) as the content in ascorbic acid and total phenolics. The results evidence all the complexity to evaluate the in vitro antioxidant capacity of foods. In very general terms, in spite of the wide utilization in these tests (FRAP, TAC, ORAC TRAP and others), their significance remains obscure. The discrepancy of the results and the absence of good correlation between the assays clearly highlight all the importance of understanding the strengths and weakness of assays evaluating antioxidant potential of a food at the risk of giving erroneous information to the consumer. It is clear that the use of "total antioxidant capacity" assays for the in vitro assessment of antioxidant quality of food does not be employed by food industrials as a marketing argument or for the assessment of the "wholesomeness" of a food.
Disciplines :
Biotechnology
Author, co-author :
PINCEMAIL, Joël ;  Centre Hospitalier Universitaire de Liège - CHU > Service de Chirurgie cardio-vasculaire et thoracique
Tabart, Jessica ;  Université de Liège - ULiège
Defraigne, Jean-Olivier ;  Université de Liège > Département des sciences cliniques > Chirurgie cardio-vasculaire et thoracique
Dommes, Jacques ;  Université de Liège > Département des sciences de la vie > Biologie moléculaire et biotechnologie végétales
Kevers, Claire ;  Université de Liège > Département des sciences de la vie > Département des sciences de la vie
Language :
English
Title :
The Total Antioxidant Capacity of Foods: a reappraisal. Application to commercial orange juices
Publication date :
2015
Journal title :
Journal of Antioxidant Activity
eISSN :
2471-2140
Volume :
1
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 January 2016

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