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KMID : 0665220090220030396
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Korean Journal of Food and Nutrition
2009 Volume.22 No. 3 p.396 ~ p.401
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Identification of Microorganisms from Eggs in Hypermarket in the Northern Gyeonggi Area
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Chun Myoung-Sook
Hong Seung-Hee
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Abstract
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Microorganisms or their toxins can be transferred to eggs and cause food poisoning in humans. Therefore, this study was conducted to detect microbial contamination of eggs and to identify microorganisms in any contaminated eggs. Four different brands of eggs were collected from hypermarkets in the northern Gyeonggi area. The total bacterial counts on the shells of the eggs varied greatly between brands. In addition, various bacterial species including Klebsiella pneumoniae, Pseudomonas mendocina, Alcaligenes xylosoxidans, Alcaligenes faecalis, and Enterobacter cloacae were identified on eggshells. Furthermore, mean of total bacterial counts of four brands was and E. coli was detected on the eggshell of one brand egg. However, Salmonella was not identified on all brands of collected eggs. We also demonstrated that the E. coli isolated from the eggshell was not pathogenic based on the absence of pathogen-specific gene expression patterns. Taken together, the result of this study indicate that strict quality control and improved distribution controls are required to decrease microbial contamination and improve human health.
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KEYWORD
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eggs, total bacterial count, E. coli, Salmonella, northern Gyeonggi area
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