Cyclic voltammetric and nanogravimetric studies of NADP+ redox transformations on a yeast-modified platinum electrode

G. Inzelt, A. Róka

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The dominant voltammetric response of a yeast suspension in neutral or slightly alkaline media can be assigned to the redox transformations of nicotinamide adenine dinucleotide (NAD+/NADH) and nicotinamide adenine dinucleotide phosphate (NADP+/NADPH). By immobilization of yeast on platinum, a stable electrode can be prepared which shows an electrocatalytic activity towards the reduction of NADP+ and the reoxidation of the product formed. Reversible cyclic voltammetric responses were obtained. The peak currents depend practically linearly on the NADP-Na 2 concentration and on the square root of the scan rate. The surface mass changes accompanying the redox transformations were monitored by an electrochemical quartz crystal nanobalance.

Original languageEnglish
Pages (from-to)9-12
Number of pages4
JournalElectrochemistry Communications
Volume45
DOIs
Publication statusPublished - Aug 2014

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Keywords

  • Adsorption
  • Biosensor
  • Electrochemical quartz crystal nanobalance
  • Nicotinamide adenine dinucleotide phosphate
  • Yeast

ASJC Scopus subject areas

  • Electrochemistry

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