supplemented
with egg yolk incubated at 37 C for 48 h. S. aureus colonies
were further tested for positive coagulase reaction
(Bactident Coagulase Biolife). E. coli strain was counted on
Tryptone Bile X-Glucuronide agar (TBX agar, LAB HAL003)
incubated at 37 C for 24 h. L. monocytogenes was enumerated
on polymyxinPolymyxin-aAcriflavin-Llithium Chloride-Ceftazidime-
Aesculin-Mannitol agar (PALCAM, Biolife 401604)
after incubation for 48 h at 35 C