PMID: 7547148Apr 1, 1995Paper

A method and medium for the electrical detection of Listeria spp. from food

International Journal of Food Microbiology
C J CapellM O Moss

Abstract

The development of a liquid medium for the detection of Listeria spp. by capacitance monitoring of food samples previously enriched in UVM 1 broth is described. Rapid growth of Listeria monocytogenes was shown to occur in liquid media with selectivity based on antibiotics found in Oxford agar. The final capacitance medium contained higher concentrations of the Oxford selective agents than Oxford agar and did not require the esculin/ferric ammonium citrate reaction to be observed. The medium relied upon the ability of Listeria spp. to induce a greater than 30% change in capacitance within 30 h. When run in parallel with the Listeria spp. test samples of a large food company, the method gave far fewer false-positive results than Fraser broth.

References

Jun 1, 1978·Journal of Physics E: Scientific Instruments·J C RichardsR H Christie
Oct 1, 1991·Applied and Environmental Microbiology·R J PremaratneE A Johnson
Jun 1, 1991·International Journal of Food Microbiology·D W WarburtonJ Vinet
Sep 1, 1991·Microbiological Reviews·J M Farber, P I Peterkin
Nov 1, 1990·The Journal of Applied Bacteriology·F J Bolton
Oct 1, 1988·Journal of Food Protection·Judy A Fraser, William H Sperber
Aug 1, 1991·Journal of Food Protection·A M LundD J Pusch

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