南京市零售生鲜鸡类食品中沙门氏菌的污染状况调查

发布时间：2018-08-08 21:09

【摘要】：目的 :对南京市零售市场上鸡类食品中的沙门氏菌进行定性、定量检测,以了解其沙门氏菌的污染状况。方法 :选取超市和农贸市场作为采样点,分别采用PCR方法和最可能数(most probable number,MPN)定量法对样品进行检测;运用@risk风险评估软件,用Cumulative分布拟合阴性和阳性样品中沙门氏菌的污染水平,用Discrete分布拟合所有样品中沙门氏菌的污染水平。结果:288份鸡类食品中沙门氏菌阳性率高达14.9%,6种不同鸡类食品中沙门氏菌阳性率无差异,农贸市场零售鸡类食品沙门氏菌的阳性率高于超市;在8个抽检月份中,6、7月份阳性率较高,分别为27.5%和20.0%。阴性样品中沙门氏菌的污染水平为0.009 MPN/g,阳性样品中沙门氏菌的污染水平为1.080 MPN/g,所有检测样品中沙门氏菌的平均污染水平为0.018MPN/g。结论 :南京市零售鸡类食品中沙门氏菌的污染状况不容忽视,未来应加强对沙门氏菌污染的定量监测。
[Abstract]:Objective: to detect salmonella in chicken food in Nanjing retail market qualitatively and quantitatively. Methods: supermarkets and farmers' markets were selected as sampling points, samples were tested by PCR method and (most probable number-MPN quantitative method, respectively, and (most probable risk assessment software was used. The contamination level of salmonella in negative and positive samples was fitted with Cumulative distribution, and the contamination level of salmonella in all samples was fitted with Discrete distribution. Results the positive rate of Salmonella in 28 8 chicken foods was as high as 14. 9% in 6 different chicken foods. The positive rate of salmonella in retail chicken food in farmers market was higher than that in supermarket. The positive rate in July was higher than that in July, 27.5% and 20.0%, respectively. The contamination level of salmonella in negative samples was 0.009 MPN / g, that of salmonella in positive samples was 1.080 MPN / g, and the average contamination level of salmonella in all tested samples was 0.018 MPN / g. Conclusion: the contamination of salmonella in retail chicken food in Nanjing should not be ignored, and the quantitative monitoring of salmonella contamination should be strengthened in the future.
【作者单位】：南京中医药大学第二临床医学院营养学教研室;江苏省疾病预防控制中心食品安全与评价所;
【基金】：南京中医药大学青年自然科学基金(13XZR16) 南京中医药大学新专业建设专项课题(NZYXZY2013-10)
【分类号】：R155.55

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