Antioxidant Capacity of Beetroot: Traditional vs Novel Approaches

Red beetroot has been ranked among the 10 most potent antioxidant vegetables, although only extraction-based methods have been used to evaluate its total antioxidant capacity. Therefore, the present study aims at comparing the traditional extraction-based method with two more recent approaches (QUEN...

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Bibliographic Details
Published in:Plant foods for human nutrition (Dordrecht) 2017-09, Vol.72 (3), p.266-273
Main Authors: Carrillo, Celia, Rey, Raquel, Hendrickx, Marc, del Mar Cavia, María, Alonso-Torre, Sara
Format: Article
Language:English
Subjects:
Antioxidants
Antioxidants - analysis
Antioxidants - isolation & purification
Beetroot
Beta vulgaris - chemistry
Bioavailability
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Cocoa
Ecology
Extraction
Food Science
Heat treatment
Honey
Methods
Nutrition
Original Paper
Plant Extracts - chemistry
Plant Extracts - isolation & purification
Plant Physiology
Plant Roots - chemistry
Vegetables
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Summary:Red beetroot has been ranked among the 10 most potent antioxidant vegetables, although only extraction-based methods have been used to evaluate its total antioxidant capacity. Therefore, the present study aims at comparing the traditional extraction-based method with two more recent approaches (QUENCHER -QUick, Easy, New, CHEap and Reproducible- and GAR -global antioxidant response method), in order to establish their suitability in the case of beetroot. Our results indicate that the total antioxidant capacity of beetroot would be underestimated when using extraction-based procedures, since both QUENCHER and GAR methods resulted in a higher total antioxidant capacity. The effect of a thermal treatment on the total antioxidant capacity of beetroot varies among the methods evaluated and our findings suggest different compounds responsible for the total antioxidant capacity detected in each pre-processing method. Remarkably, the present study demonstrates that the traditional extraction-based method seems useful to screen for (changes in) the “bioavailable” antioxidant potential of the root.
ISSN:0921-9668
1573-9104
DOI:10.1007/s11130-017-0617-2