The importance ofSalmonellaandListeria monocytogenesin food safety is well‐known. Recovery of these organisms is usually done in different types of enrichment broths. Recently Bailey and Cox (1992) reported the development of a “Universal Preenrichment Medium” capable of recovering bothSalmonellaandListeria monocytogenes, thus eliminating the need of using two broths to enrich these important foodborne pathogens. In our laboratory we have ascertained that Oxyrase, an oxygen scavenger, is able to allow the rapid growth ofListeria monocytogenesand otherListeriaspp. (Yu and Fung 1991a) as well as other facultative anaerobic foodborne pathogens (Yu and Fung 1991b). It seems reasonable that Oxyrase will be able to stimulate growth ofSalmonellaspp. andListeria monocytogenesin the “Universal Preenrichment Medium.” the purpose of this investigation was to ascertain the stimulatory capability of Oxyrase onSalmonellaspp. andListeria monocytogenesin the “Universal Preenrichm
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