Abstract
The electrochemical redox behavior of vulpic acid, a lichen derivative, mainly investigated by its antibiotic activity was carried out in aqueous electrolytes at glassy carbon electrode. This investigation was developed by using cyclic, differential pulse and square wave voltammetry in a wide range of pH. Thus, the electrochemical oxidation of vulpic acid showed to occur in a single anodic and irreversible process with strong adsorption of oxidation products. The oxidation of adsorbed species leads to a second anodic peak, meanwhile the first anodic peak decreases intensely. Such events showed to be higher in non-neutral pH, and should be associated to hydrolysis of lactone.
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