Inactivation Of Microorganisms By Irradiation
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Ionizing radiation induces in (any) irradiated substance chemical active species called free radicals. Microbial extinction by irradiation is the result of their interaction with protein molecules. The damages are concentrated on DNA producing death. As in any type of interaction, a yield could be defined, connecting irradiation dose with the amount of damages - dead microorganisms.

An important, specific and convenient technological consequence follows.
When is required the extinction of an entire population of microorganisms, which is the case of sterilization, it is relevant only the total dose, even delivered in fractions. An interruption during irradiation procedure is possible.