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Sensitization of microorganisms to radiation by previous ultrasonic treatment


, : Sensitization of microorganisms to radiation by previous ultrasonic treatment. J Food Sci 29(5): 641-643

Radiation resistant (Micrococcus radiodurans) and relatively radiation sensitive (Streptococcus faecalis) could be made sensitive to gamma radiation by pre-vious ultrasonic treatment at 300 KC/S frequency. 90% reduction values (Do) for the first organism could be reduced from 5.8 x 105 rads to 2.9 x 105 rads with the sonication-radiation treatment. For S. faecalis; the Do value decreased from 37 x 103 rads to 22 x 103 rads. Practical application for reducing the total absorbed dose, during radiation-sterilization of liquid foods is pointed out.

US$19.90

DOI: 10.1111/j.1365-2621.1964.tb00424.x


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