Amperometric peroxidase-based

Amperometric peroxidase based H2O2 sensors have been made by using fast reversible redox couples (see Tables I and II). In these, the reducing member of the redox couple (essentially species HA in reaction 1) donates electrons to H2O2 and is oxidized (reaction 2)... [Pg.180]

J. Zeravik, T. Ruzgas, and M. Franek, A highly sensitive flow-through amperometric immunosensor based on die peroxidase chip and enzyme-channeling principle. Biosens. Bioelectron. 18,1321—1327 (2003). [Pg.77]

Z. Dai, E Yan, J. Chen, and H.X. Ju, Reagentless amperometric immunosensors based on direct electrochemistry of horseradish peroxidase for determination of carcinoma antigen-125. Anal. Chem. 75, 5429-5434 (2003). [Pg.280]

B.H. Liu, F. Yan, J.L. Kong, and J.Q. Deng, A reagentless amperometric biosensor based on the coimmobilization of horseradish peroxidase and methylene green in a modified zeolite matrix. Anal. Chim. Acta 386, 31-39 (1999). [Pg.595]

T.J. Castilho, M. del P.T. Sotomayor, and L.T. Kubota, Amperometric biosensor based on horseradish peroxidase for biogenic amine determinations in biological samples. J. Pharmaceut. Biomed. Anal. 37, 785-791 (2005). [Pg.603]

S. Razola Serradilla, B. Ruiz Lopez, N. Diez Mora, H.B. Mark and J.M. Kauffmann, Hydrogen peroxide sensitive amperometric biosensor based on horseradish peroxidase entrapped in a polypyrrole electrode, Biosens. Bioelectron., 17(11-12) (2002) 921-928. [Pg.581]

Kong YT, Imabayashi S, Kano K, Ikeda T, Kakiuchi T (2001) Peroxidase-based amperometric sensor for the determination of total phenols using two-stage peroxidase reactions. Am J Enol Vitic 52 381-385... [Pg.148]

Smutok, O. Ngounou, B. Pavlishko, H. Gayda, G. Gonchar, M. Schuhmann, W., A reagentless bienzyme amperometric biosensor based on alcohol oxidase/peroxidase and an os-complex modified electrodeposition paint, Sens. Actuator B-Chem. 2006,113, 590-598... [Pg.370]

Triazines Flow-through amperometric immunosensor based on peroxidase chip and enzyme channeling system 1 ng L 1 8... [Pg.142]

Yu D, Blankert B, Bodoki E, BoUo S, Vire J, Sandulesku R, Nomura A, Kauffman J (2006) Amperometric biosensor based on horseradish peroxidase-immobiUzed magnetic particles. Sens Actuators B Chem 113 749-754... [Pg.414]

Vreeke M, Maidan R and Heller A 1992 Hydrogen peroxide and beta-nicotinamide adenine dinucleotide sensing amperometric electrodes based on electrical connection of horseradish peroxidase redox centers to electrodes through a... [Pg.454]

Morales A, C pedes F, Munoz Martlnez-Fabregas E et al. Hydrogen peroxide amperometric biosensor based on a peroxidase-graphite-epoxy biocomposite. Analytica Chimica Acm 1996 332 131-138. [Pg.189]

An amperometric biosensor for trans-resveratrol determination in aqueous solutions by means of carbon paste electrodes modified with peroxidase basic isoenzymes (PBIs) from Brassica napus was developed [182]. Catalytic properties of PBIs from Brassica napus toward trows-resveratrol oxidation were demonstrated by conventional UV-vis spectroscopic measurements. The enzymatic reaction rate was studied and kinetics parameters were detected. An amperometric biosensor based on Brassica... [Pg.35]

Interestingly, the sepioUte-MWCNT hybrid buckypapers combine the adsorption properties of the fibrous siUcate with the electrical conductivity characteristic of the CNTs, aUowing functionalization of the system through reaction with the silanol groups at the external surface of sepioUte. In this way, a new amperometric biosensor based on immobilization of horseradish peroxidase (HRP) enzyme oti sepioUte—MWCNT materials has been developed [259]. [Pg.72]

An amperometric biosensor, based on the immobilization of Horseradish peroxidase (HRP) into redox active [Zn-Cr-ABTS] (ABTS, 2,2 -azinobis 3-ethylbenzothiazoline-6-sulfonate) layered double hydroxide, was applied to the determination of cyanide [55]. The detection of cyanide is performed via its noncompetitive inhibiting action on the... [Pg.262]

M. Vreeke, R. Maidan, A. HeUer, Hydrogen Peroxide and P-Nicotinamide Adenine Dinucleotide Sensing Amperometric Electrodes Based on Electrical Connection of Horseradish Peroxidase Redox Centers to Electrodes Through a Three-Dimensional Electron Relaying Polymer Network. Anal. Chem., 64 (1992) 3084—3090. [Pg.252]

Redox mediators have been used in this case for cathodic detection. An amperometric sensor for choline based on electron transfer between horseradish peroxidase and a redox polymer was described. Amperometric biosensors based on acetylcholinesterase or butyrylcholinesterase were used for the kinetic determination of organophosphate and carbamate pesticides. [Pg.284]

A.A. Karyakin, E.E. Karyakina, and L. Gorton, Amperometric biosensor for glutamate using Prussian Blue-based artificial peroxidase as a transducer for hydrogen peroxide. Anal. Chem. 72, 1720—1723 (2000). [Pg.459]

Glutamate Amperometric Prussian blue-based artificial peroxidase as a transducer for hydrogen peroxide Karyakin et al. (2000)... [Pg.128]

First examples of the amperometric detection of H202 accomplished in such a range were based on the use of an enzyme, namely horseradish peroxidase (HRP), a prototypical hemeprotein peroxidase, which catalyses the reduction of H202 and due to its peculiar structure, allows direct electron transfer between its active site and the electrode surface at low applied potential [14 17]. This approach, although it shows good sensitivity and accuracy, suffers from some important shortcomings such as low stability and the limited binding of HRP to solid surfaces. [Pg.560]

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