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Electrochemical Characterization and Quantification of the Strong Antioxidant and Antitumor Agent Pomiferin
Author(s) -
Ginja Teixeira Jorge,
Barrocas Dias Cristina,
Martins Teixeira Dora
Publication year - 2009
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200900178
Subject(s) - catechol , electrochemistry , redox , antioxidant , chemistry , glassy carbon , square wave , cyclic voltammetry , anode , electrode , anodic oxidation , nuclear chemistry , inorganic chemistry , organic chemistry , physics , quantum mechanics , voltage
Abstract The electrochemical behavior of pomiferin, a natural isoflavone with significant antioxidant, antidiabetic and antitumor properties, is reported here for the first time at a glassy carbon electrode (GCE). In order to understand the redox processes of this compound, its response was compared with the nonantioxidant isoflavone osajin. Based on cyclic and square‐wave voltammetric methods it was observed that pomiferin presents a quasireversible anodic peak, which was attributed to the oxidation of the catechol group, and that is strongly influenced by pH. This anodic process yields a well‐defined DPV response, which can be used for the analytical determination of this potential pharmotherapeutic isoflavone.