With respect to the enumeration of Staphylococcus aureus, 0.1 ml of each dilution was deposited onto the surface of plates containing Baird Parker agar (Acumedia-BP) incorporated in egg yolk enriched with 50% 0.1% tellurite (Laborclin) and incubated at 37 °C for 48 h. The colonies were then counted, and Colony Forming Units (CFU) recorded. All experiments were conducted in triplicate.