食品中李斯特菌污染状况调查

目的了解广州市食品中李斯特菌污染状况。方法2003年6月至2004年6月我们在广州市大型超市及市场中随机抽取销售的熟食制品、生肉类、牛奶制品、雪糕糕点类、蔬菜沙拉等共150份进行李斯特菌检验,并对检出的单核增生李斯特菌的耐药性进行测定。结果检出9株李斯特菌,总检出率为6.00%,其中熟肉类6.67%,生肉类17.39%;在检出菌株中1株为单核增生李斯特菌,其他样品未检出。结论广州市食品存在不同程度李斯特菌污染,应加强监督监测,防止李斯特菌引起的食物中毒的暴发流行。

Investigation on Contamination Caused by Listeria in foods

Objective This investigation was to learn about the contamination status caused by Listeria in foods in Guangzhou city. Methods A total of 150 samples sold in large-scale supermarkets and on the market including cooked food, raw meat, milk produce, ice cream and pastry, as well as vegetable and salad was randomly collected from June of 2003 to June of 2004 for determination of Listeria, the drug resistance of Listeria monocytogenes found from which was also investigated. Results 9 strains of Listeria were detected, with a total detectable rate of 6.00%, of which cooked food and raw meat accounted for 6.67% and 17.39%, respectively; one strain of 9 that had been detected was Listeria monocytogenes which was not found in other samples. Conclusion Contamination of Listeria by various degrees exists in food of Guangzhou and we should strengthen surveillance and monitoring to preclude the outbreak and epidemic of food poisoning caused by Listeria.