辽宁省食品中单核细胞增生李斯特菌污染调查分析  

Surveillance and analysis on food contamination by Listeria monocytogenes in Liaoning province

作　　者：孙婷婷[1] 任时[1] 李雪[1] 魏彤竹[1] 王伟杰[1] 谢韬[1] SUN Ting-ting;REN Shi;LI Xue;WEI Tong-zhu;WANG Wei-jie;XIE Tao(Liaoning Provinicial Center for Disease Control and Prevention,Shenyang,Liaoning 110005,China;不详)

机构地区：[1]辽宁省疾病预防控制中心检验检测所,辽宁沈阳110005

出　　处：《中国微生态学杂志》2022年第5期536-539,543,共5页Chinese Journal of Microecology

基　　金：辽宁省自然基金指导计划(2019-ZD-1091)。

摘　　要：目的分析2019年辽宁省市场出售食品的单核细胞增生李斯特菌(Listeria monocytogenes)污染情况,初步确定该菌易引起的高危食品种类,为食品风险监测提供参考。方法从我省13个监测点中共抽取753份不同种类食品样本,根据国标法GB4789.30-2016《食品安全国家标准食品微生物学检验单核细胞增生李斯特氏菌检验》对样本进行L.monocytogenes菌株的分离及生化鉴定。结果样品中检出L.monocytogenes 22株,检出率为2.9%(22/753)。污染最严重的是冷冻鱼糜制品9.4%(12/128),其次为预制半成品3.6%(8/221)和熟肉制品1.0%(2/196)。结论辽宁省市售食品存在不同程度L.monocytogenes污染,尤以冷冻鱼糜制品污染较为突出,应继续加强对市售食品L.monocytogenes的检测及监管能力。Objective To analyze Listeria monocytogenes contamination in foods in Liaoning province in 2019,and preliminarily identify the types of high-risk food easily contaminated by the pathogen,so to provide references for food risk monitoring.Methods A total of 753 samples of different kinds of food were collected from 13 monitoring sites in our province.The isolation and biochemical identification of L.monocytogenes strains were performed according to the National Food Safety Standard(GB4789.30-2016)food Microbiology Test for L.monocytogenes.Results 2.92%(22/753)of the samples were detected as L.monocytogenes positive.The positive rate of frozen minced fish products was the highest at 9.38%(12/128),followed by prefabricated semi-finished product 3.62%(8/221)and cooked meat product 1.02%(2/196).Conclusion L.monocytogenes contamination exists in commercial food in Liaoning province,especially in frozen surimi products.The detection and supervision of L.monocytogenes in commercial food should be further strengthened.

关 键 词：单核细胞增生李斯特菌 市售食品 食源性致病菌 

分 类 号：R155.5[医药卫生—营养与食品卫生学]