[0017] Note: uidA gene in Escherichia coli and Shigella are amplified.
[0018] 3. The candidate primer design
[0019] The present invention is used for all primer premier6 software design to amplify target candidate gene or fragment 1_2
Sets of alternatives.
[0020] 4, the amplified target gene primers candidate program Blast analysis
[0021] In all the primers in Genbank candidate Blast analysis program, to obtain a higher specific primers program as an experimental verification schemes, each of which may choose more than one pathogen amplification targets, each target will be amplified 1-2 experimental verification program.
[0022] 5, for each of the available experimental validation Single PCR validation program to determine the availability of primers, including assessment of the specificity and sensitivity of the assessment.
[0023] 6, the target amplification primers all mixed multiplex PCR, verify the availability of the common primer amplification, the primer on the work need not follow steps 2-4 repeating design new primers for replacement. Ultimately, a specific primer sequences of the present invention provides (see Table 2).
[0024] Table 2 fourteen kinds of common foodborne pathogens multiplex PCR primer sets
[0027] Note: Although the gene or DNA fragment is selected detection target conserved region, but there are still individual nucleotide insertions or deletions may be based, PCR products will increase or decrease the size of a few bp, does not affect the results judgment.