Abstract
The carbon paste design allows bulk modification of the entire electrode material with the bio-component and the incorporation of a variety of different additives such as enzyme stabilizers, mediators, activators, or other compounds that can increase the stability, amplitude, and selectivity of the response signal. The incorporation of heterogeneous particles such zeolites in the modified carbon paste electrodes might engender an improvement of their analytical performances. We show here that the incorporation of zeolite, already exchanged with the cationic form of the redox mediator (YFcH), within GOx carbon paste bioelectrodes improves the analytical performances of the mediated glucose biosensor. Not only the inclusion of the redox mediator into the zeolite particles permits to extend the linear range and to enhance significantly the operational and storage stabilities, but unexpectedly it permits to speed up the response time. †To Pierre Coulet: Thank you for showing us that honesty is essential for stable and ever-lasting friendships.
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