Accession Number : AD0285212

Title :   INVESTIGATION OF RELATIVE MICROBIOLOGICAL RESPONSE TO VARYING TYPES AND METHODS OF APPLICATION OF IONIZING RADIATION

Corporate Author : MICHIGAN UNIV ANN ARBOR

Personal Author(s) : KEMPE,LLOYD L. ; GRAIKOSKI,J.T.

Report Date : 30 NOV 1961

Pagination or Media Count : 1

Abstract : The influences of field strength, radiation energy, and intermittent irradiation on the lethality of gamma rays for Clostridium botulinum 62A and 213B spores were evaluated. Three cobalt-60 and one cesium-137 radiation sources were used. Variation in field strengths from 0.002 to 2.31 megarad per hour were utilized in the cobalt-60 sources. None of these variables was found to affect significantly the lethality of gamma rays for C. botulinum spores. The results show that data obtained on moderately weak radiation sources can be extrapolated for design purposes to field strengths of at least 2.31 megarad per hour; that interruption of irradiation for short intervals has little effect; and that cesium-137 should be essentially as effective as cobalt-60 sources for food-sterilization purposes. (Author)

Descriptors :   *CLOSTRIDIUM BOTULINUM, *RADIATION EFFECTS, BEEF, DOSE RATE, GAMMA RAYS, MICROORGANISMS, SPORES, TOXICITY, VIABILITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE