Reagentless glucose biosensor based on direct electron transfer of glucose oxidase immobilized on colloidal gold modified carbon paste electrode

2003 ◽  
Vol 19 (3) ◽  
pp. 177-183 ◽  
Author(s):  
Songqin Liu ◽  
Huangxian Ju
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Carbon Paste Electrode ◽  
Colloidal Gold ◽  
Direct Electron Transfer ◽  
Glucose Biosensor ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Paste Electrode

Glucose biosensor based on immobilization of glucose oxidase on a carbon paste electrode modified with microsphere-attached l -glycine

2017 ◽  
Vol 64 (5) ◽  
pp. 745-753 ◽  
Author(s):  
Soner Donmez ◽  
Fatma Arslan ◽  
Nurşen Sarı ◽  
Elvan Hasanoğlu Özkan ◽  
Halit Arslan
Keyword(s):  
Glucose Oxidase ◽  
Carbon Paste Electrode ◽  
Glucose Biosensor ◽  
Carbon Paste ◽  
Paste Electrode

Electrochemical glucose biosensor based on nickel oxide nanoparticle-modified carbon paste electrode

2013 ◽  
Vol 42 (4) ◽  
pp. 237-244 ◽  
Author(s):  
Ceren Erdem ◽  
Derya Koyuncu Zeybek ◽  
Gözde Aydoğdu ◽  
Bülent Zeybek ◽  
Şule Pekyardımcı ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Carbon Paste Electrode ◽  
Glucose Biosensor ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Nickel Oxide Nanoparticle ◽  
Oxide Nanoparticle ◽  
Paste Electrode

scholarly journals Direct Electron Transfer of Cytochrome c on ZnO Nanoparticles Modified Carbon Paste Electrode

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Masoud Negahdary ◽  
Saeed Rezaei-Zarchi ◽  
Neda Rousta ◽  
Soheila Samei Pour
Keyword(s):  
Cytochrome C ◽  
Carbon Paste Electrode ◽  
Zno Nanoparticles ◽  
Direct Electron Transfer ◽  
Direct Electrochemistry ◽  
Phosphate Buffer Solution ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Buffer Solution ◽  
Paste Electrode

The direct electrochemistry of cytochrome c (cyt c) immobilized on a modified carbon paste electrode (CPE) was described. The electrode was modified with ZnO nanoparticles. Direct electrochemistry of cytochrome c in this paste electrode was easily achieved, and a pair of well-defined quasireversible redox peaks of a heme Fe (III)/Fe(II) couple appeared with a formal potential (E0) of −0.303 V (versus SCE) in pH 7.0 phosphate buffer solution (PBS). The fabricated modified bioelectrode showed good electrocatalytic ability for reduction of H2O2. The preparation process of the proposed biosensor was convenient, and the resulting biosensor showed high sensitivity, low detection limit, and good stability.

scholarly journals Immobilization of Glucose Oxidase on Modified-Carbon-Paste-Electrodes for Microfuel Cell

2018 ◽  
Vol 16 (1) ◽  
pp. 92 ◽  
Author(s):  
Laksmi Ambarsari ◽  
Inda Setyawati ◽  
Rini Kurniasih ◽  
Popi Asri Kurniatin ◽  
Akhiruddin Maddu
Keyword(s):  
Fuel Cell ◽  
Glucose Oxidase ◽  
Carbon Paste Electrode ◽  
Interfacial Polymerization ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Morphological Form ◽  
Carbon Paste Electrodes ◽  
Paste Electrode ◽  
Modified Carbon Paste Electrodes

Glucose oxidase (GOx) is being developed for many applications such as an implantable fuel cell, due to its attractive property of operating under physiological conditions. This study reports the functional immobilization of glucose oxidase onto polyaniline-nanofiber-modified-carbon-paste-electrodes (GOx/MCPE) as bioanodes in fuel cell applications. In particular, GOx is immobilized onto the electrode surface via a linker molecule (glutaraldehyde). Polyaniline, synthesized by the interfacial polymerization method, produces a morphological form of nanofibers (100-120 nm) which have good conductivity. The performance of the polyaniline-modified-carbon-paste-electrode (MCPE) was better than the carbon- paste-electrode (CPE) alone. The optimal pH and temperature of the GOx/MCPE were 4.5 (in 100 mM acetate buffer) and 65 °C, respectively. The GOx/MCPE exhibit high catalytic performances (activation energy 16.4 kJ mol-1), have a high affinity for glucose (Km value 37.79 µM) and can have a maximum current (Imax) of 3.95 mA. The sensitivity of the bioelectrode also was high at 57.79 mA mM-1 cm-2.

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