Publication: Design and development of a highly stable hydrogen peroxide biosensor on screen printed carbon electrode based on horseradish peroxidase bound with gold nanoparticles in the matrix of chitosan
Issued Date
2007-04-15
Resource Type
ISSN
09565663
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2-s2.0-33847376772
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Mahidol University
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SCOPUS
Bibliographic Citation
Biosensors and Bioelectronics. Vol.22, No.9-10 (2007), 2071-2078
Suggested Citation
Tanin Tangkuaram, Chatchai Ponchio, Thippayawadee Kangkasomboon, Panadda Katikawong, Waret Veerasai Design and development of a highly stable hydrogen peroxide biosensor on screen printed carbon electrode based on horseradish peroxidase bound with gold nanoparticles in the matrix of chitosan. Biosensors and Bioelectronics. Vol.22, No.9-10 (2007), 2071-2078. doi:10.1016/j.bios.2006.09.011 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/24209
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Title
Design and development of a highly stable hydrogen peroxide biosensor on screen printed carbon electrode based on horseradish peroxidase bound with gold nanoparticles in the matrix of chitosan
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Abstract
The design and development of a screen printed carbon electrode (SPCE) on a polyvinyl chloride substrate as a disposable sensor is described. Six configurations were designed on silk screen frames. The SPCEs were printed with four inks: silver ink as the conducting track, carbon ink as the working and counter electrodes, silver/silver chloride ink as the reference electrode and insulating ink as the insulator layer. Selection of the best configuration was done by comparing slopes from the calibration plots generated by the cyclic voltammograms at 10, 20 and 30 mM K3Fe(CN)6for each configuration. The electrodes with similar configurations gave similar slopes. The 5th configuration was the best electrode that gave the highest slope. Modifying the best SPCE configuration for use as a biosensor, horseradish peroxidase (HRP) was selected as a biomaterial bound with gold nanoparticles (AuNP) in the matrix of chitosan (HRP/AuNP/CHIT). Biosensors of HRP/SPCE, HRP/CHIT/SPCE and HRP/AuNP/CHIT/SPCE were used in the amperometric detection of H2O2in a solution of 0.1 M citrate buffer, pH 6.5, by applying a potential of -0.4 V at the working electrode. All the biosensors showed an immediate response to H2O2. The effect of HRP/AuNP incorporated with CHIT (HRP/AuNP/CHIT/SPCE) yielded the highest performance. The amperometric response of HRP/AuNP/CHIT/SPCE retained over 95% of the initial current of the 1st day up to 30 days of storage at 4 °C. The biosensor showed a linear range of 0.01-11.3 mM H2O2, with a detection limit of 0.65 μM H2O2(S/N = 3). The low detection limit, long storage life and wide linear range of this biosensor make it advantageous in many applications, including bioreactors and biosensors. © 2006 Elsevier B.V. All rights reserved.