Mechanisms of peroxidase oxidation of o-dianisidine, 3,3′,5,5′-tetramethylbenzidine, and o-phenylenediamine in the presence of sodium dodecyl sulfate |
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Authors: | A. V. Kireyko I. A. Veselova T. N. Shekhovtsova |
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Affiliation: | (1) Faculty of Chemistry, Moscow State University, Vorobs’evy gory, Moscow, 119992, Russia |
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Abstract: | Peroxidase oxidation of o-dianisidine, 3,3′,5,5′-tetramethylbenzidine, and o-phenylenediamine in the presence of sodium dodecyl sulfate (SDS), an anionic surfactant, was spectrophotometrically studied. It was found that 0.1–100 mM SDS concentrations stabilize intermediates formed in the peroxidase oxidation of these substrates. The cause of the stabilization is an electrostatic interaction between positively charged intermediates and negatively charged surfactant. |
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Keywords: | o-dianisidine horseradish peroxidase oxidation mechanism o-phenylenediamine sodium dodecyl sulfate 3,3′ ,5,5′ -tetramethylbenzidine |
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