DYNAMIC FREQUENCY-DEPENDENT DIELECTRIC RESPONSE OF 3 AQUEOUS BIOMOLECULAR SOLUTIONS

A simple two-component Debye-Lorentz model is presented for the freque ncy dependence of the dielectric permittivity epsilon(omega) of aqueou s solutions of three biomolecules, Glycine, Myoglobin, and Hemoglobin. A local response function for this model is given for the use of work ers in wave propagation and biophysical studies. It is necessary to tr eat the full inertia tensor of the water, I-1 not equal I-2 not equal I-3 not equal I-1 to obtain good qualitative agreement with the experi mental values of the three biomolecular solutions given. The Hemoglobi n solution is shown to exhibit dielectric hysteresis, whereas this eff ect is absent in Glycine and Myoglobin. The Hemoglobin is found to nee d a prolate inertial tensor to agree with experiment.