Journal
FOOD CHEMISTRY
Volume 228, Issue -, Pages 106-115Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2017.01.137
Keywords
Bioactive compounds; Antioxidant activity; Vitis labrusca L.; Reactive oxygen species
Funding
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Instituto Federal do Sertao Pernambucano
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A method for rapid determination of phenolic compounds by reversed-phase high-performance liquid chromatography (RP-HPLC), using a new column of faster resolution was validated and used to characterize commercial products produced with new grape Brazilian varieties of Northeast of Brazil. The in vitro antioxidant activity was also measured. The method showed linearity (R > 0.9995), good precision (CV% < 2.78), recovery (91.8-105.1%) and limits of detection (0.04-0.85 mg L-1) and quantification (0.04-1.41 mg L-1) according to other methods previously published with the difference of a run time of only 25 min. The results obtained in the characterization of the samples differed for juices and wines from other world regions, mainly because of the high values of (-)-epigallocatechin and trans-caftaric acid. The products analyzed showed high antioxidant activity, especially the wine samples with values higher than those from wines of different regions of the world. (C) 2017 Elsevier Ltd. All rights reserved.
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