摘要
目的了解沈阳市各类食品中单核增生李斯特菌污染情况及其变化趋势,为食品安全风险评估及预警提供依据。方法依据2012-2014年《国家食源性致病菌监测工作手册》要求,随机抽取6类、509份样品进行单核增生李斯特菌的监测。结果在监测的509份样品中,检出单核增生李斯特菌菌株26株、总检出率为5.1%;其中肉及肉制品类食品致病菌检出率最高为11.5%(χ2=16.72,P<0.01)、在不同季度中以第一、二季度的检出率较高分别为9.6%和9.4%(χ2=18.46,P<0.01)、采自农贸市场食品致病菌检出率最高为13.8%(χ2=17.79,P<0.01)。而不同包装类型食品中LM检出率差异无统计学意义(χ2=2.98,P>0.05)。结论沈阳市市售的食品存在单核增生李斯特菌的污染,冬春季是致病菌污染的高发季节;肉及肉制品是高风险食品;农贸市场出售的食品致病菌污染较重。应加强对重点时段、重点食品、重点食品消费场所及相关疾病的监测、监管,以防控食源性疾病的发生。
Objective To investigate the contamination of food by Listeria monocytogenes and its changing trend in Shenyang,and to provide evidence for food safety risk assessment and early warning. Methods In accordance with the requirements of National Manual for Monitoring Listeria Monocytogenes, 509 food samples of 6 categories were randomly selected for monitoring of Listeria monocytogenes contamination. Results Twenty - six strains of Listeria monocytogenes were detected in the 509 samples, with the total detection rate of 5.1%. The detection rate varied significantly among various foods（χ2 = 1672,P 〈 0.01） , among seasons（χ2 = 18.46,P 〈 0.01）and among foods from different sources（χ2 = 17.79,P 〈 0.01） , with the highest detection rates in the meat and meat products （ 11.5% ）, in the first （9.6%） and second seasons（9.4%） and in foods collected from farmers＇ markets （ 13.8%）. There was no significant difference in the detection rates of foods packaged in different ways（χ2 = 298,P 〉 0.05）. Conclusions There exists Listeria monocytogenes contamination in foods in Shenyang Cityin 2012 - 2014. Winter and spring are the high - occurrence seasons. Meat and meat products are high risk foods. Foods from farmers＇ markets are more contaminated. Monitoring and management on key foods, key food consumption sites and relative diseases in key seasons should be strengthened to prevent and control food borne diseases.
出处
《实用预防医学》
CAS
2016年第10期1216-1218,共3页
Practical Preventive Medicine
基金
沈阳市科委项目(F12-183-9-00)
