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http://dx.doi.org/10.9721/KJFST.2011.43.5.618

Development of Immunochromatography for Detection of Escherichia coli O157:H7 Contaminated in Meats and Sprouts  

Lee, Won-Gyeong (Division of Applied Life Science (BK21 program), Gyeongsang National University)
Ryu, Hee-Jeong (Division of Applied Life Science (BK21 program), Gyeongsang National University)
Song, Jeong-Un (Division of Applied Life Science (BK21 program), Gyeongsang National University)
Kim, Kyeong-Yeol (Division of Applied Life Science (BK21 program), Gyeongsang National University)
Chung, Do-Yeong (Department of Food Science & Technology, Gyeongsang National University)
Kim, Jeong-Sook (Institute of Agriculture and Life Science, Gyeongsang National University)
Shim, Won-Bo (Institute of Agriculture and Life Science, Gyeongsang National University)
Chung, Duck-Hwa (Division of Applied Life Science (BK21 program), Gyeongsang National University)
Publication Information
Korean Journal of Food Science and Technology / v.43, no.5, 2011 , pp. 618-623 More about this Journal
Abstract
Escherichia coli O157:H7 has been considered as a significant food-borne pathogen since its role in causing hemorrhagic colitis and hemolytic uremic syndrome in humans was recognized. In this study, we developed an immunochromatography (ICG) assay for the detection of E. coli O157:H7. E. coli O157:H7 monoclonal antibody (EC MAb) and colloidal gold were conjugated and its specificity was determined by the ICG treated with EC MAb and antimouse IgG at test and control lines, respectively. The detection limit of the ICG was $1{\times}10^5$ CFU/mL, and no crossreactivity was observed to other E. coli strains and major food-borne pathogens. To determine the minimum enrichment time for the ICG, meats and sprouts were inoculated with $1{\times}10$ CFU/100 ${\mu}L$ of E. coli O157:H7. After enrichment time of 10 and 2 h for meats and sprouts, respectively, up to $1{\times}10$ CFU/100 ${\mu}L$ of E. coli O157:H7 could be detected by ICG.
Keywords
Escherichia coli O157:H7; immunochromatography; meat; sprout;
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Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 0
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