Abstract
An amperometric sensor for amino acids based on the immobilization of amino acid oxidase on the surface of a CuPtCl(6)/GC is described. The amperometric current is due to the oxidation of H2O2 liberated during the enzyme reaction on the surface of the enzyme electrode. The electrode response characteristics as well as kinetic parameters have been evaluated. The enzyme electrode was characterized as an electrochemical biosensor, which was used as detector in high performance liquid chromatography (HPLC) for the determination of a mixture of amino acids with satisfactory results.
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