The electrochemical properties of myoglobin(Mb) in collagen film electrodes were investigated.Collagen provided a suitable microenvironment for redoxprotein to transfer electrons directly with the underlying electrodes

the electron transfer rate between myoglobin and PG electrodes was greatly facilitated and cyclic voltammetry of Mb-Collagen films showed a pair of well-defined and nearly reversible peaks at about-0.35 V(vs.SCE).The effect of scan rate on the peak currents of Mb-collagen films was investigated as well

showing that the reduction and oxidation peak currents increase linearly with the scan rate in the range of 0.05 to 2.0 V/s respectively.It suggests that the electron transfer of Mb in the films is a surface-controlled process.