Redox behavior of the ellagitannin oenothein B and ellagic acid at a glassy carbon electrode
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Data
2015
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Resumo
Oenothein B and ellagic acid are polyphenolic compounds, and their oxidation mechanism is pH-
dependent, in one step, involving a different number of electrons and protons. Oenothein B and ellagic
acid first oxidation occurs at a lower potential, corresponding to the quasi-reversible oxidation of the
phenolic hydroxyl groups. The oxidation of both compounds leads to the formation of electroactive
products that undergoes an irreversible oxidation process at higher potentials. The electrochemical
characterization of their redox behavior brought useful data about their chemical stability, antioxidant
and pro-oxidant activity, enabling a comprehensive understanding of their redox mechanism.
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Oenothein B, Glassy carbon electrode, Ellagic acid, Antioxidant properties
Citação
MARTINS, José Luís Rodrigues et al. Redox behavior of the ellagitannin oenothein B and ellagic acid at a glassy carbon electrode. International Journal of Electrochemical Science, Belgrado, v. 10, p. 4552-4561, 2015.