Objective To establish a PCR-immunogold strip method for rapid detection of Escherichia coli O157:H7 in food. Methods The PCR method was established through the design of specific primers and the establishment of rapid test immunogold strip for detection of PCR products combined immunogold skills with double antibody sandwich method. Test specificity of the new method using the test bacterial strains which include 1 Escherichia coli O157:H7 and 7 common food-borne pathogens and compare the sensitivities of the immunogold strip method and the traditional agarose gel electrophoresis method. Results The established method was specific and the sensitivity was higher than the agarose gel electrophoresis by 100 times. Conclusion The new method is suitable for the detection of Escherichia coli O157:H7 in food.
标题:PCR-免疫胶体金试纸条方法检测食品中 肠出血性大肠杆菌O157:H7
英文标题:Detection of Escherichia coli O157:H7 in food by PCR-immunogold method