An electrophoretically mediated microanalysis (EMMA) method has been developed for yeast alcohol dehydrogenase and quantification of reactant and product cofactors, NAD and NADH. The enzyme substrate ethanol (1% (v/v)) was added to the buffer (50 mM borate, pH 8.8). Results are presented for parallel capillary electrophoresis with a novel miniature UV area detector, with an active pixel sensor imaging an array of two or six parallel capillaries connected via a manifold to a single output capillary in a commercial CE instrument, allowing conversions with five different yeast alcohol dehydrogenase concentrations to be quantified in a single experiment.
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