Table 1.

Percentages of the prewash bioluminescence signal and viable counts and after bioluminescent E. coli O157:H7 strain L-2-inoculated beef carcass surface tissues were washed with water

Tissue typeInoculation methodWash methodInoculum (log10 CFU/cm2)Inoculation menstruum% of prewash bioluminescence signal (I/A) remaining% of prewash viable count recovered
LeanInversionImmersion6.23Feces50 NDa
LeanInversionImmersion5.23Feces51ND
LeanInversionImmersion4.23Feces70ND
AdiposeInversionImmersion6.23Feces11ND
AdiposeInversionImmersion5.23Feces15ND
AdiposeInversionImmersion4.23Feces23ND
LeanInversionImmersion∼6.0Feces46ND
AdiposeInversionImmersion∼6.0Feces24ND
LeanInversionImmersion∼5.0Feces45ND
AdiposeInversionImmersion∼5.0Feces23ND
LeanSpreadFlow3.90Buffer6186
AdiposeSpreadFlow3.90Buffer10 4
  • a ND, not determined.