Electrocatalytic Oxidation ofd-Gluconate at a Ubiquinone-Mixed Carbon Paste Electrode with an Immobilized Layer ofd-Gluconate Dehydrogenase from Bacterial Membranes

Carbon paste electrodes modified with enzymes, tissues, and cells

“…Sensors for D-gluconate have been studied based on D-gluconate dehydrogenase, an enzyme with bound cofactor, adsorbed on mediator modified (BQ or ubiquinone) pastes [17,46,481 and also on plain pastes as direct electron transfer was shown possible reflecting that it also incorporates an additional heme group [17, 481.…”

Fundamentals and Practices of Mediated Bioelectrocatalysis

“…However, E1/2 is a complicated function of the electrode kinetics, the enzyme kinetics, and the mass-transfer property. 51 Generally speaking, E1/2 becomes more positive than E˚M with decreasing the electrode reversibility, as in the case of a homogeneous system. In contrast, E1/2 shifts to more negative potentials than E˚M by increasing the reversibility of the electrode reaction, the enzyme reaction rate, [Mox]*, and/or the mass transfer rate of the mediator.…”

“…In contrast, E1/2 shifts to more negative potentials than E˚M by increasing the reversibility of the electrode reaction, the enzyme reaction rate, [Mox]*, and/or the mass transfer rate of the mediator. 51 This is a typical surface catalytic property.…”