Biosensors electrodes

Possible applications include optical coatings [98], catalysts [99-101], substrates for Surface Enhanced Raman spectroscopy [102] or biosensor electrodes [103], Mesoporous gold can be prepared by de-aHoying a suitable precursor such as a... 

A. Vakurov, C.E. Simpson, C.L. Daly, T.D. Gibson, and P.A. Millner, Acetylcholinesterase-based biosensor electrodes for organophosphate pesticide detection I. Modification of carbon surface for immobilization of acetylcholinesterase. Biosens. Bioelectron. 20, 1118-1125 (2004). 

A.L. Crumbliss, J.Z. Stonehuerner, R.W. Henkens, J. Zhao, and J.P. O Daly, A carrageenan hydrogel stabilized colloidal gold multi-enzyme biosensor electrode utilizing immobilized horseradish peroxidase and cholesterol oxidase/cholesterol esterase to detect cholesterol in serum and whole blood. Biosens. Bioelectron. 8, 331-337 (1993). 

FIGURE 57.13. Molecular architecture of bienzyme biosensor electrode containing tyrosinase and neuropathy target esterase catalytic domain (NEST). Reproduced with permission from Kohli et al. (2007a). 

Tetrathiafulvalene containing polymeric electron transfer systems Tetrathiafulvalene (TTF) is another mediator many researchers have utilized as an electron mediator in constructing amperometric biosensors. Electrodes constructed of TTF efficiently oxidize glucose oxidase [118,119], lactate oxidase [120] and choline oxidase [121]. These sensors like those using viologen containing polymeric electron transfer systems have the... 

Interferents at the Biosensor Electrode. One of the problems with these enzyme electrode biosensors is illustrated by the result for the bare Pt electrode. At this low potential, Pt exhibits evidence for direct [H2O2] reduction occurring at its surface [168]. Furthermore, dissolved O2 has been shown to be a problem, interfering with H2O2 measurement at these potentials. However, in spite of these factors reducing the HRP enzyme electrode sensitivities at - 0.05 V, this potential condition still produces a better biosensor sensitivity for [H2O2] than does the + 0.85 V direct H2O2 detection condition [69]. 

Vakurov A., Simpson C. E., Daly C. L., Gibson T. D., and Millner R. A., Acetylecholinesterase-based biosensor electrodes for organophosphate pesticide detection II. Immobilization and stabilization of acetylcholinesterase. Biosens. Bioelectron., 20(1), 2324-2329, 2005. 

Construction membrane biosensor (electrode) reactor biosensor (FIA systems)... 

The biosensor electrodes were prepared as mentioned earfrer using NaR instead of SOD. Further, the NaR-SAM-GNP-PPy-Pt electrode shows the high sensitivity, 84.5 nA pM. Moreover, the present N03 biosensor shows a wider Hnear detection range, lower detection limit, and higher sensitivity than the eadier reported N03 biosensors. 

Dhand and co-workers also synthesized PANI hydrogels-based biosensor electrode. The working mechanism of the sensor relies on the redox properties of the glucose oxidase where the enzymatic reaction of glucose oxidase and glucose is monitored through electrochemical measurement of the glucose oxidase-PANl... 

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