荆门市学生餐加工过程微生物监测结果分析

了解荆门市学生餐生产加工过程中微生物污染情况,为指导食品加工单位改善卫生条件提供参考.方法 2015年4-9月方便抽取4所市级中学,对学生餐加工过程各环节的236份样本进行微生物指标检测.结果 学生餐制作环节中30%的样本大肠菌群计数<10 cfu/mL,大肠菌群计数最大值为7.0×105 cfu/mL.金黄色葡萄球菌的检出率为2% (4/228),阳性样本为2份环境(豆制品操作台面、盛放炒菜的方盆)和2份原辅料(鲫鱼、鸡肉)样本.生活用水、物表环境样本和成品学生餐微生物指标不合格率分别为75% (6/8),79%(50/63)和53%(21/40),差异有统计学意义(x2=8.439,P=0.014).结论 荆门市学生餐生产加工过程各环节样本大肠菌群污染普遍,环境和原辅料样本致病菌风险隐患突出.建议加强对学生餐生产加工各环节卫生的监管力度.

Analysis on microbial contamination of school meals processing in Jingmen City

Objective To understand the microorganism pollution of school meals processing in Jingmen City and to find potential safety hazard timely.Methods A total of 236 samples of school meals processing from four city middle schools were detected for microbial indicators from April to September in 2015.Results The coliform counts of student meal processing samples were between less than 10 to 7.0×105 cfu/mL and 30% samples were less than 10 cfu/mL.The detection rate of Staphylococcus aureus was 2% (4/228) without other pathogenic bacteria,and two environment samples and two raw materials were positive for Staphylococcus aureus.The failure rates of domestic water,surface environmental samples and school meals in microorganism were 75%(6/8),79%(50/63) and 53%(21/40) respectively,without statistically difference(x2 =8.439,P=0.014).Conclusion The coliforms pollution of school meals processing in Jingmen City are general and the high risk hidden danger troubles of pathogenic bacterium are environment and raw materials.Supervision system for hygiene safety of school meals processing should be strengthened to make sure the security of school meal.