Studies on Electrocatalytically Kinetic Behavior of Horseradish Peroxidase at Salt Bridge Supported Bilayer Lipid Membrane

ABSTRACT

This paper reports a novel and biological compatible biosensor that was used to study the electrochemical behavior of horseradish peroxidase (HRP) incorporated in salt bridge-supported bilayer lipid membrane (Sb-BLM). The incorporation of HRP was achieved by electrostatic interaction between HRP and LA anion sites pre-incorporated in Sb-BLM, which result in the enhancement of the electron exchange between the protein and the electrode surface. A quasi-reversible electron transfer of HRP was observed even in the absence of mediators. The electrocatalytically kinetic behavior of HRP and the electrode-kinetic process were investigated with this biosensor. In the presence of hydrogen peroxide, the electrocatalytical activity of HRP was determined.

Keywords::

• Sb-BLM;
• Horseradish peroxidase
• Electrocatalytically kinetic behavior
• Biosensor