[Studies on the effect of combined treatment of irradiation with vacuum packaging on ready-to-eat meat products contaminated with Listeria monocytogenes and spoilage bacteria].
Altogether one hundred and fifty samples of Beijing roast duck, roast chicken and cooked meat products inoculated with approximately 1.5 x 10(3)-2.3 x 10(3) cfu/g L. monocytogenes are packed under vacuum and are irradiated with 60Co radiation at doses of 1.0, 2.0, 2.5 and 3 kGy. The results showed that L. monocytogenes in samples can be eliminated by a dose of 2.5 kGy. The resistance of the model strain 54004 to irradiation is stranger than three isolates (X20, G4 and g2). In addition, the spoilage bacteria in 150 samples of roast duck, roast chicken and cooked meat products can be killed at doses of 10.15 and 20 kGy, respectively.
Fu
Ping
P
Institute of Food Safety Control & Inspection, Ministry of Health, Beijing 100021, China.
Ji
Rong
R
Li
Yuwei
Y
Li
Yanjun
Y
D000818:Animals; D004372:Ducks; D005514:Food Irradiation; D005516:Food Microbiology; D018857:Food Packaging / Q000379:methods*; D008089:Listeria monocytogenes / Q000302:isolation & purification*; D008460:Meat / Q000382:microbiology*