육류 및 새싹채소에 오염된 Escherichia coli O157:H7의 신속검출을 위한 면역크로마토그래피법의 개발
Development of Immunochromatography for Detection of Escherichia coli O157:H7 Contaminated in Meats and Sprouts
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× 105 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 1×10 CFU/100 μL of E. coli O157:H7. After enrichment time of 10 and 2 h for meats and sprouts, respectively, up to 1×10 CFU/100 μL of E. coli O157:H7 could be detected by ICG.
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Abstract 서론 재료 및 방법 균주 및 시약 Protein G agarose를 이용한 항체 정제 Colloidal gold의 제작 Antibody-colloidal gold conjugate의 준비 면역크로마토그래피법의 개발 면역크로마토그래피법에 의한 시료분석 결과 및 고찰 EC MAb의 정제도 비교 Antibody-colloidal gold conjugate의 반응성 확인 면역크로마토그래피의 민감도 및 특이성 확인 E. coli O157:H7 양성시료의 분석 요약 감사의 글 문헌