Moats W A
Appl Environ Microbiol. 1980 Oct;40(4):710-4. doi: 10.1128/aem.40.4.710-714.1980.
A total of 432 bacterial isolates from washed and unwashed eggs, egg-washer surfaces, and washwaters from five egg-grading plants in Maryland and southeastern Pennsylvania were classified. Counts on equipment surfaces showed considerable variation from plant to plant, reflecting care used in cleaning. Unwashed eggs had a higher percentage of gram-positive cocci (71%), and isolates included Streptococcus faecalis, Aerococcus, and Escherichia coli, which were not isolated from equipment surfaces and washwaters. Equipment surfaces had a higher proportion of actinomycetes than unwashed eggs, and predominant gram-negative rods were Alcaligenes and Moraxella, which were not found on unwashed eggs. Flavobacterium and Alcaligenes have been implicated in shell egg rots, Staphylococcus aureus has been implicated in food poisoning, and organisms resembling micrococci and actinomycetes have been found in broken-out egg products.
对从马里兰州和宾夕法尼亚州东南部的5家鸡蛋分级厂的清洗和未清洗鸡蛋、洗蛋机表面及清洗水中分离出的432株细菌进行了分类。设备表面的细菌计数在不同工厂间差异很大，这反映了清洁工作的细致程度。未清洗鸡蛋中革兰氏阳性球菌的比例较高（71%），分离出的菌株包括粪肠球菌、气球菌和大肠杆菌，而这些菌在设备表面和清洗水中未分离到。设备表面放线菌的比例高于未清洗鸡蛋，主要的革兰氏阴性杆菌是产碱杆菌和莫拉菌，未清洗鸡蛋中未发现这些菌。黄杆菌和产碱杆菌与带壳蛋腐烂有关，金黄色葡萄球菌与食物中毒有关，在破损蛋制品中发现了类似微球菌和放线菌的微生物。
