Electrocatalytic oxidation of NADH by rutin in biomembrane-like films on glassy carbon electrode

Stable lipid film was made by casting dipalmitoylphosphatidylcholine (DPPC) and rutin onto the surface of a glassy carbon (GC) electrode. The electrochemical behavior of rutin in the DPPC film was studied. The modified electrode coated with rutin gave quasi-reversible reduction-oxidation peak on cyc...

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Bibliographic Details
Published in:Electrochemistry communications 2000-11, Vol.2 (11), p.796-799
Main Authors: Tang, Jilin, Wu, Zhengyan, Wang, Jianguo, Wang, Erkang
Format: Article
Language:English
Subjects:
Biological and medical sciences
Dipalmitoylphosphatidylcholine
Electrocatalysis
Electrochemistry
Fundamental and applied biological sciences. Psychology
Molecular biophysics
NADH
Physical chemistry in biology
Rutin
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Summary:Stable lipid film was made by casting dipalmitoylphosphatidylcholine (DPPC) and rutin onto the surface of a glassy carbon (GC) electrode. The electrochemical behavior of rutin in the DPPC film was studied. The modified electrode coated with rutin gave quasi-reversible reduction-oxidation peak on cyclic voltammogram in the phosphate buffer (pH 7.4). The peak current did not decrease apparently after stored at 4°C for 8 hours in refrigerator. This model of biological membrane was used to investigate the oxidation of dihydronicotinamide adenine dinucleotide (NADH) by rutin. Rutin in the film acts as a mediator. The modified electrode shows a great enhancement and the anodic peak potential was reduced by about 220 mV in the oxidation of 5×10 −3 mol L −1 NADH compared with that obtained at a bare glassy carbon electrode.
ISSN:1388-2481
1873-1902
DOI:10.1016/S1388-2481(00)00124-7