Potentiometric Determination of NAD(P)H Coenzymes Using a Nitrite-Selective Membrane Electrode and a Nitrate Reductase Enzyme and the Application to Glucose Assay in Human Serum.

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NAD(P)H coenzyme concentrations were determined with the combination of a nitrite-selective membrane electrode and a nitrate reductase enzyme. The method was based on the detection of nitrite formed by the enzymatic reaction of NAD(P)H with nitrate catalyzed by nitrate reductase. The lower detection limits for both these coenzymes were around 100 µM. This system was applied to detect glucose by combining an additional glucose dehydrogenase enzyme. Serum glucose levels could be determined through the detection of nitrite.

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  • Analytical Sciences

    Analytical Sciences 15 (2), 135-139, 1999

    社団法人 日本分析化学会

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