北京市昌平区2010-2015年市售食品中单核细胞增生李斯特菌污染状况分析

目的 了解北京市昌平区市售食品中单核细胞增生李斯特菌污染状况,为政府部门有效监管提供技术支持。 方法 2010-2015年,在辖区内农贸市场、超市/便利店和餐饮单位抽取12类368件食品样品进行单核细胞增生李斯特菌检测。 结果 368件食品样品中检出单核细胞增生李斯特菌16株,总检出率为4.35%。其中,不同类别食品中生禽肉检出率最高(25.71%),其次是生畜肉(11.11%)和鲜冻水产品(6.67%);各季度样品中三季度样品检出率最高(7.41%),其次是二季度(4.11%),一、四季度样品未检出;农贸市场、超市/便利店和餐饮单位等不同销售场所样品检出率分别为4.85%、4.11%和4.20%。 结论 2010-2015年北京市昌平区市售生禽肉、生畜肉和鲜冻水产品存在单核细胞增生李斯特菌污染,且以三季度污染较为突出。

Contamination by Listeria monocytogenes in commercially available food in Changping District, 2010-2015

Objective To understand the contamination by Listeria monocytogenes in commercial food in Changping District, Beijing City and then provide technical support for effective supervision of governmental departments. Methods Totally, 368 foods of 12 categories were sampled from farmers' markets, supermarkets/convenience stores and restaurants for Listeria monocytogenes test from 2010 to 2015. Results Sixteen strains of Listeria monocytogenes were detected in the 368 food samples. The total detection rate was 4.35%, with the highest detection rate (25.71%) in raw poultry, followed by those in raw livestock meat (11.11%) and in frozen aquatic products (6.67%). The samples colleceted in the third quarter of the year had the highest detection rate (7.41%), followed by those in the second quarter (4.11%). No Listeria monocytogenes were detected in the samples collected in the first and fourth quarters. The detection rates in the farmers' markets, supermarkets/convenience stores and restraints were 4.85%, 4.11% and 4.20% respectively. Conclusions There was contamination by Listeria monocytogenes in raw poultry, raw livestock meat and frozen aquatic products in Changping District of Beijing in 2010-2015. It was particularly prominent in the third quarter.