中国八省婴幼儿食品中蜡样芽胞杆菌污染状况研究

Occurrence of Bacillus cereus in infants and young children foods in 8 provinces in China

目的了解中国八省婴幼儿食品中蜡样芽胞杆菌的污染状况。方法2012年在中国8个省市进行了调查,共采集1716份婴幼儿食品,采用平板计数法进行蜡样芽胞杆菌的定量分析。结果 9.85%的婴幼儿食品检出蜡样芽胞杆菌,婴幼儿配方粉和婴幼儿即食谷基辅助食品中蜡样芽胞杆菌阳性率分别为14.08%和6.01%,定量结果 >100 CFU/g的样品分别占总样品量的2.20%和1.11%。结论我国零售婴幼儿食品存在不同程度的蜡样芽胞杆菌污染,应继续加强对婴幼儿食品中蜡样芽胞杆菌的监管。

Objective To investigate the contamination status of infants and young children foods by Bacillus cereus. Methods 1716 food samples were collected from retail market in 8 provinces in China and examined for Bacillus cereus by the plate count method. Results Bacillus cereus was isolated from 9.85% of all the samples （169/ 1716）. 14.08% of the powered formula for infants and young children were contaminated with B. cereus as well as 6.01% of the ready-to-eat cereal-based complementary foods for infants and young children. Counts higher than 100 CFU/g were found in 18 samples of the powered formula （2.20%） and 10 samples of the ready-to-eat cereal-based complementary foods （ 1.11% ）. Conclusion Inspection and management of infants and young children foods should be enhanced to prevent Bacillus cereus infection.