Abstract: The effect of 60Co Y irradiation oil the ethal dose of the strains of salmonellaspp.was observed.TheSalmonella cholerasuis could be more easily’ killed than Salmonella enteritidis.At 0~ 5. 1 .5kGy could kill 3 .2 X 1 04S.enteritidis CCTCC AB94018 found ill 100 grams pork with the D,., value of 0.49kGy.lrradiated chilled packaged17orb chops could be preserved for more than 30 days at 0~5 .In the caw’’ or cooked meat of the above pork chopsirradiated by 1 .99kGy.off odors cold not be detected.By 3 .3kGy irradiation and preserved for 23 days.or by 6.6kGyand preserved for 47 days.the pork chops cold not be found off-odors

Key words: Irradiation Chilled pork chops