Oxytetracycline Glucose Agar (OGA) (RTU)

The growth of yeasts and molds is favored by the presence of glucose and yeast extract.
The addition of oxytetracycline just before use inhibits most bacteria, including lactobacilli (acidophilic bacteria which may be the dominant flora in certain food products).

If a massive contamination is suspected, notably in meat products or raw seafood, the addition of gentamicin can inhibit the majority of Gram negative flora which may be present.