Microbiology-PTM-OMA_Modules_1-5

Competitive Flora

• At least one food item and one surface must be tested with competing flora  (natural or artificial) • Naturally present in raw foods • Artificially added for environmental surfaces  • Simulates real‐world conditions  • If artificially contaminating, competing organism should be at least ten times  more abundant than target • Competing strain should be appropriate to the target