The present study was performed to isolate
Salmonella by plating the bead-bacteria complexes on DHL agar after immunomagnetic separation (IMS) from food and fecal samples contaminated artificially at 1 to 10
3 cfu/ml, and then to detect
Salmonella by polymerase chain reaction (PCR) assay. With IMS, it was possible to collect
Salmonella from the samples at 1 cfu /ml. Even if colonies other than
Salmonella developed on the selective agar plate, only
Salmonella was detected by the PCR assay using two pairs of primers for the
Salmonella invA and
stn genes. Also,
Salmonella was completely detected within 24 h from eggs contaminated naturally with
Salmonella O9 and from diarrheal stool samples of patients with
Salmonella O9 or O16. This combination of IMS and PCR seems to be a useful method for rapid and sensitive detection of
Salmonella in food products and fecal specimens.
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