Biosensors based on direct electron transfer of horseradish peroxidase

Biosensors based on direct electron transfer of horseradish peroxidase... 

Lu, X., Zhang, Q., Zhang, L., and Li, J., Direct electron transfer of horseradish peroxidase and its biosensor based on chitosan and room temperature ionic liquid, Electrochem. Commun., 8,874-878,2006. 

Since diamond is inactive for the oxidation and reduction reactions of H2O2, modification of the electrode is required to make diamond suitable for the enzyme-based biosensor application. Tatsuma, et al. [33] reported the use of heme peptide and horseradish peroxidase, types of redox enzymes, based on the direct electron transfer between the diamond electrode and the redox enzyme. Another promising approach is the deposition of metal nanoparticles that have catalytic activity for the H2O2 oxidation- reduction reaction. 

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