
November 7, 2014 13:15 PSP Book - 9in x 6in 09-Serge-Cosnier-c09
252 Conductometric Enzyme Biosensors
glucose oxidation as the oxidizing agent results in a higher level of
solution acidity inside the enzymatic layer because three protons
per glucose molecule are generated compared to one proton per
molecule in the case of the natural oxidizing cosubstrate, oxygen.
Depending on the potassium ferrocyanide concentration, a 10–100
times higher biosensor response and a remarkably wider dynamic
working range were revealed as well [43].
A further study was mainly focused on the use of different
additional membranes deposited on top of the enzymatic membrane