2016~2018年市售242件婴幼儿米粉微生物污染情况调查

Investigation on microbial contamination of 242 infant rice flours sold in Yuxi from 2016 to 2018

中文关键词:  婴幼儿米粉  肠杆菌科  克罗诺杆菌属  蜡样芽胞杆菌  污染水平

英文关键词:infant rice flour  Enterobacteriaceae  Cronobacter spp.  Bacillus cereus  contamination level

中文摘要:

      目的 了解玉溪市售国产婴幼儿营养米粉的卫生状况。方法 采用国家标准方法对242件玉溪市市售的婴幼儿营养米粉进行细菌总数、大肠菌群、肠杆菌科、克罗诺杆菌属及蜡样芽胞杆菌检测分析。结果 本次采集的婴幼儿米粉样品的合格率为74.38%; 大肠菌群指标均未超标; 7件米粉样品细菌总数超标, 占比8.54%; 58件样品检出克罗诺杆菌属, 阳性率为23.97%; 10件样品检出蜡样芽胞杆菌, 阳性检出率为4.13%。一季度生产的样品合格率最低, 产自中国福建、广西、湖南、浙江及美国、西班牙、英国、日本和欧洲其他地区的米粉样品合格率最高, 采自零售店及包装形式为散装的样品合格率最低。结论 2016至2018年玉溪市市售婴幼儿米粉中部分样品细菌总数超标, 存在克罗诺杆菌属污染, 可能会导致婴幼儿感染。

英文摘要:

      Objective To understand the hygienic condition of domestic retail infant rice flour in Yuxi. Methods Total 242 samples of infant rice flour were collected during 2016 to 2018 for monitoring aerobic bacteria count, Coliform?count, Enterobacteriaceae, Cronobacter spp. and Bacillus cereus by national standard method. Results From 2016 to 2018, the pass rate of retail infant rice flour samples in Yuxi was 74.38%. There were no samples out of limitation of Coliform counts. The total number of bacteria in 7 samples exceeded the standard, according for 8.54%. Cronobacter spp. was detected in 58 samples with a positive rate of 23.97%. Bacillus cereus detected in 10 samples with a positive detection rate of 4.13%. The lowest qualified rate of samples produced in the first quarter. Rice flour samples from Fujian, Guangxi, Hunan, Zhejiang of China, and the United States, Spain, the United Kingdom, Japan and other Europe regions had the highest pass rate. Rice flour samples taken from retail stores and packaged in bulk had the lowest pass rate. Conclusion The total number of bacteria in some samples of rice flour during the year from 2016 to 2018 in Yuxi exceeded the standard, and Cronobacter spp. contamination may cause infection in infants and young children.