Electrochemical Characterization of Myoglobin‐Polylysine Films at a Temperature Range of 6–80 °C |
| |
Authors: | Peterson M. Guto Geoffrey N. Kamau |
| |
Affiliation: | Department of Chemistry, University of Nairobi, P.?O. Box 30197 – 00100, Nairobi, Kenya |
| |
Abstract: | This work demonstrated for the first time that myoglobin cross‐linked in polylysine films is electrochemically active at 6 °C. At 6 °C, these protein films exhibited reversible reduction/oxidation peaks which are characteristic of FeIII/FeII redox couple. The estimated current function densities (J=1.6×10?4 C/V cm2), surface concentrations (ΓT=0.10 nmol/cm2) and standard electron transfer constant (ks=13.86 s?1) at 6 °C for the data taken at a scan rate of 0.1 V/s were similar to those which were obtained at 10, 15 and 23 °C. Basically, this study shows a possible electrocatalytic application of these myoglobin/polylysine films, for example in low temperature sensing applications. |
| |
Keywords: | Myoglobin Polylysine Cyclic voltammetry Square wave voltammetry Pyrolytic graphite electrode (PGE) Biocatalysis |
|
|