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KMID : 0881720160310040264
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Journal of Food Hygiene and Safety
2016 Volume.31 No. 4 p.264 ~ p.271
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Investigation of Microbial Contamination Level during Production of Baby Leafy Vegetables
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Lee Eun-Sun
Kwak Min-Gyu
Kim Won-Il
An Hyun-Mi
Ryu Jae-Gee
Kim Se-Ri
Lee Hyo-Sup
Ryu Song-Hee
Kim Hwang-Yong
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Abstract
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The purpose of this study was to investigate contamination sources of baby leafy vegetables by assessing microbial loads on baby leafy vegetables and agricultural inputs contacted with the vegetables. To estimate microbial loads, fecal indicators (coliform and Escherichia coli) and foodborne pathogens (E. coli O157:H7, Salmonella spp., Staphylococcus aureus, Listeria monocytogenes, and Bacillus cereus) were examined. A total of 126 samples including eleven kinds of leafy vegetables, irrigation water, media, and tools were tested, resulting in coliform contamination observed from most of samples. For E. coli, 10.3% (13/126) of the samples were positive including irrigation water, knife, handler, media, tools, and three kinds of leafy vegetables. B. cereus was detected from 38% (48/126) of the samples including media, tools and three kinds of leafy vegetables. No E. coli O157:H7, Salmonella spp., and L. monocytogenes was detected. This result implies that contacting with agricultural inputs could explain microbial load of baby leafy vegetables.
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KEYWORD
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Baby leaf vegetables, sanitary indication bacteria, food borne pathogens
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