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目的了解辽宁省各地区市售食品中单核细胞增生李斯特致病菌的污染现状及分布特征,为单核细胞增生李斯特菌的防控工作提供依据。方法辽宁省14个城市全部纳入检测范围,2010—2014年对六类食品进行采样,并对单核细胞增生李斯特菌进行分离和鉴定。结果六类5 822份食品样品中,检出单核细胞增生李斯特菌109株,阳性率为1.87%;其中生畜禽肉阳性检出率为8.88%,水产品为2.02%,熟肉制品为1.22%,速冻米面食品为0.65%,餐饮食品为0.93%,豆制品均为阴性;2010—2014年单增李斯特菌的阳性检出率依次为1.38%、0.67%、1.44%、1.29%、4.82%,年均检出率基本保持平稳;受单核细胞增生李斯特菌污染较为严重的食品为生畜禽肉(8.88%)、水产品(2.02%)、熟肉制品(1.22%)。结论辽宁省各类食品均不同程度受到单核细胞增生李斯特菌污染,尤以生畜禽肉、熟肉制品、水产品污染严重。
Objective To understand the status and distribution of Listeria monocytogenes in commercial products in Liaoning Province, and provide evidence for the prevention and control of Listeria monocytogenes. Methods All 14 cities in Liaoning Province were included in the test range. Six types of food samples were sampled from 2010 to 2014, and Listeria monocytogenes was isolated and identified. Results Among the 5 822 samples of six kinds of food samples, 109 strains of Listeria monocytogenes were detected, the positive rate was 1.87%. Among them, the detection rate of live poultry meat was 8.88%, that of aquatic products was 2.02%, that of cooked meat products 1.22%, fast frozen rice noodles 0.65%, food 0.93%, soy products are negative; 2010-2014 Listeria monocytogenes positive detection rates were 1.38%, 0.67%, 1.44%, 1.29% , 4.82%, the annual average detection rate remained stable; Listeria monocytogenes contaminated food is more serious for the live poultry meat (8.88%), aquatic products (2.02%), cooked meat products (1.22%), . Conclusion All kinds of food in Liaoning Province were contaminated by Listeria monocytogenes to varying degrees, especially the serious pollution of live poultry, cooked meat products and aquatic products.