MAGDA SAID HANAFY
Physics Department, Faculty of Science, Zagazig University, Egypt
Abstract. An electric field of 6 kV/m strength and 50 Hz frequency was directed horizontally to three groups of mice for exposure periods 30, 45 and 60 days respectively and for 30 days post exposure. The dielectric properties of the total serum proteins of the exposed mice were studied as an indication of the effect of the electric field on the molecular structure of the serum proteins. The molecular structure of the total serum proteins were studied through measuring their dielectric relaxation and the electric conductivity in the frequency range 0.1 – 5 MHz at 4 ± 0.5 ºC. The absorption spectra of the extracted proteins were also measured in the wavelength range 200 – 600 nm. The results showed that the electric field lowered the permittivity value of the serum proteins and increased its conductivity; a fact that indicates pronounced changes in the molecular structure of the total serum protein of the exposed mice. In addition, the intensity of the absorption spectral bands of the serum proteins of the exposed mice was found to decrease.
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