嘉兴市即食食品中致病微生物的污染现状调查

目的了解市售食品中食源性致病微生物的污染现状,发现高危食品,为预防和控制食源性疾病提供科学依据。方法在农贸市场、超市和餐饮环节采集与嘉兴市消费者生活密切相关的8类即食食品,开展常见致病微生物监测。结果采集的640份食品样品中,检出致病菌56株,检出率为8.75%(56/640),检出菌株以副溶血性弧菌为主,占总检出数的69.64%(39/56);金黄色葡萄球菌居次位,占14.29%;单核细胞增生李斯特菌、蜡样芽胞杆菌和创伤弧菌占比依次为8.93%、5.36%和1.79%。三季度致病微生物检出率(16.92%)最高,农贸市场、散装食品、水产品检出率相对较高,分别为17.60%、13.30%和25.00%。结论嘉兴市即食食品存在食源性致病微生物污染风险,需加强监督管理、规范食品操作和提高人群健康教育水平。

Investigation of microbial contamination on instant food in Jiaxing City

This study was conducted in order to understand the current status of microbial contamination on instant food in Jiaxing City, identify the high-risk food and provide scientific basis for the prevention and control of foodborne disease.Methods 8 kinds of frequently consumed instant food were collected from farmers'' markets, supermarkets and restaurants for microbial contamination detection. Results 56 pathogen strains were identified in 640 food samples,with positive rate of 8.75%. Among the positive samples, the detection rate of Vibrio parahaemolyticus was the highest (69.64%), followed by Staphylococcus aureus (14.29%), Listeria monocytogenes (8.93%), Bacillus cereus (5.36%) and Vibrio vulnificus (1.79%). The peak season of pathogen contamination was the third season with detection rate of 12.50%. High contamination rate was found in foods from farmers'' markets, bulk food and aquatic products, with detection rate of 17.60%, 13.30% and 25.00%, respectively.Conclusion There was a potentially high risk of microbial contaminations on instant foods in Jiaxing City. Measures should be taken such as more stringent health supervision, better practices in food operation and more food hygiene publicity to the public, which could help to reduce the risk of foodborne diseases.