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Anti- and prooxidative properties of gallic acid

The anti- and pro-oxidative properties of gallic acid in the presence of Fe(III) were evaluated. The experiments were performed at several different pH values of the reaction solutions, and at several different temperatures. Gallic acid was shown to have pro-oxidative properties as iron chelator and antioxidative properties as hydroxyl radical scavenger; in excess of Fe(III), the antioxidative properties prevail. The results are useful in conservation chemistry for optimisation of conservation procedures, and in medicinal and nutrition chemistry for the evaluation of the role of polyphenolic antoxidants in food and human body, especially after consumption of polyphenol-rich nutrition, such as wine, tea or fruit.

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University of Ljubljana, Faculty of Chemistry and Chemical Technology
Askerceva 5
SI-1000 Ljubljana
Slovenia
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