福州市售水产品中副溶血性弧菌污染状况调查

    Investigation on the Contamination Status of Vibrio Parahaemolyticus in the Aquatic Products Sold in Fuzhou

    • 摘要: 调查福州市售水产品中副溶血性弧菌的污染状况,预防由水产品引起的食源性疾病的发生,并为食品安全监管部门提供参考。随机采集360份市售水产品,按照国家标准(GB 4789.7-2013《食品微生物学检验》)进行副溶血性弧菌的分离培养,采用全自动微生物鉴定仪VITEK 2 Compact鉴定,并用多重荧光PCR方法进行毒力基因检测。360份样品中共检出115株副溶血性弧菌,阳性检出率为31.94%。其中鱼类检出率31.67%,贝类检出率42.50%,甲壳类检出率21.67%。农贸市场采集的水产品副溶血性弧菌检出率显著高于超市(P=0.003<0.01,χ2=8.637)。7月份至9月份副溶血性弧菌的阳性检出率处于高峰,12月份、1月份至3月份阳性检出率处于低谷。毒力基因tlh携带率为100%,tdh携带率为29.57%。福州市售水产品都不同程度地受到副溶血性弧菌污染,建议食用时进行彻底加热烹煮,同时避免不同种类水产品间的交叉污染,降低感染的可能性。

       

      Abstract: The investigation on the contamination status of Vibrio parahaemolyticus in the aquatic products sold in Fuzhou would prevent the occurrence of foodborne diseases caused by aquatic products and provide references for the departments of food safety supervision. 360 commercially available aquatic products in Fuzhou were collected randomly, and the isolation and culture of Vibrio parahaemolyticus were conducted according to the national standard (GB 4789.7-2013 Food Microbiological Analysis). VITEK 2 Compact was used for the identification of the isolated strains and the multiplex fluorescent PCR was used to detect the virulence genes. A total of 115 strains of Vibrio parahaemolyticus were detected among the 360 samples with the positive detection rate of 31.94%. Among them, the detection rate of fish was 31.67%, the detection rate of shellfish was 42.5%,and the detection rate of crustaceans was 21.67%. The detection rate of Vibrio parahaemolyticus in aquatic products collected from the farmer's market was significantly higher than that from the supermarkets(P=0.003<0.01, χ2=8.637). The positive detection rate of Vibrio parahaemolyticus was at its peak from July to September, while the positive detection rate was at a low ebb in December, January, February and March. The carrier rate of virulence gene tlh and was tdh was 100% and 29.57%, respectively. The aquatic products sold in Fuzhou were all contaminated with Vibrio parahaemolyticus to varying degrees. It was recommended to heat and cook thoroughly while eating to avoid the cross-contamination between different kinds of aquatic products and reduce the possibility of infection.

       

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