研究了冷却鸡肉经^60Coγ射线辐照后的菌落总数、大肠杆菌(10003)和空肠弯曲杆菌(33560、CY04)的D10值及菌落总数和大肠杆菌在贮藏期的变化。结果表明,经^60coγ射线辐照后冷却鸡肉中的菌落总数、大肠杆菌(10003)、空肠弯曲杆菌(33560、CY04)的D10值分别为1.434kGy、0.408kGy、0.175kGy、0.2kGy。真空包装的冷却鸡肉在0~4℃贮藏条件下,3kGy剂量辐照贮藏21d、5kGy剂量辐照贮藏28d后菌落总数为5.661g(CFU/g)、4.901g(CFU/g),符合禽肉产品的卫生要求。因此,辐照杀菌贮藏冷却鸡肉具有一定的实用意义。
The growth of pathogenic bacteria during storage time and their D10 values by irradiation in cooled chicken were evaluated. The total numbers of colony, E. coli 10003, Campylobacterjejuni33560 and CY04 of the D10 values were 1.434 kGy, 0.408 kGy, 0.175 kGy, 0.2 kGy respectively in cooled chicken. The results show that total bacteria count in vacuum packaged cooled chicken sample is 5.661g (CFU/g) and 4.901g (CFU/g) after 3 kGy and 5 kGy irradiation. And in storage at 0-4℃ the storage shelf-life of irradiated vacuum packaged cooled chicken could extend to 21 d and 28 d. It can be deduced that pathogenic bacteria can be controlled effectively by irradiation.