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Interaction among Phenols in Food Fortification: Negative Synergism on Antioxidant Capacity

2004; American Chemical Society; Volume: 52; Issue: 5 Linguagem: Inglês

10.1021/jf0350515

1520-5118

Manuel Pinelo, Lara Manzocco, Marı́a José Núñez, Maria Cristina Nicoli,

Antioxidant Activity and Oxidative Stress

In this work, a study about the consequences of the interaction among phenol compounds on antioxidant capacity is proposed. The antiradical activity evolution of an ethanol solution containing a mixture of three monophenols (catechin, resveratrol, and quercetin) was compared with the trend followed by each single phenol at three different temperatures (22, 37, and 60 °C). An initial increase and a following decrease in antioxidant activity were observed for all solutions at the three temperatures. The lower antiradical activity values of the mixture in comparison to the controls during the entire period of storage clearly showed that interaction among these polyphenols promotes a negative sinergistic effect on this property. Keywords: Antiradical activity; phenols; oxidation; negative synergism; temperature