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عنوان دوره: اولین دوره بین المللی و بیست و هشتمین دوره ملی (1400)

Irradiation of food by ionizing radiations is one of the best ways to eliminate pathogenic microorganisms that are mostly present on the surface of the food. Therefore, choosing the right type and energy for surface irradiation of food is of great importance. In this study, a Monte Carlo simulation was performed using Geant4 toolkit to compare the DNA damage yields induced by low-energy electron beams and X-rays in a simplified model of Escherichia coli bacterium. Several initial energies were considered for electrons and X-rays. The results indicated that low-energy electrons caused more damage to the DNA than low-energy X-rays. Therefore, electrons are more effective radiation for the disinfection of microorganisms, specially for surface decontamination.

Food irradiation؛ Escherichia coli؛ DNA damage؛ Monte Carlo؛ Geant4