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Molecularly imprinted polymers for determination of gallic acid

Molecularly imprinted polymers (MIP) are synthetic polymers with specific recognition for targeted molecules. Herein, a facile and efficient approach is presented for the preparation of MIP capable of recognizing polyphenol, i.e. gallic acid in aqueous system. Gallic acid (3, 4, 5 trihydroxybenzoic acid) is a secondary metabolite present in most plants and it was selected as a template due to its range of bioactivities including antioxidant, antimicrobial, anti-inflammatory, and anticancer. In this paper, MIP was prepared by electrochemical polymerization of 3, 4-ethylenedioxythiophene (EDOT) monomer on graphite electrode templated with gallic acid by multiple scan cyclic voltammetry. The surface feature of the prepared MIP was characterized by cyclic voltammetry and linear sweep voltammetry. All results indicated that the prepared imprinted electrode has high affinity toward gallic acid in the solution and might offer a method for determination of gallic acid in the natural extracts.

gallic acid ; molecular imprinting ; cyclic voltammetry ; linear sweep voltammetry

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