OGA Medium (Oxytetracycline Glucose Agar Base) is a selective medium, introduced by Mossel et al. and recommended for the isolation and enumeration of yeasts and molds in foodstuffs. It can be also used for clinical specimens and cosmetics. With a neutral pH, the oxytetracycline produces better results than when a low pH medium is used to inhibit bacterial growth. This medium inhibits the acidophilus organisms, Lactobacillus included. Yeast extract is a source of vitamins, particularly of the B-group essential for bacterial growth. Glucose is the fermentable carbohydrate as an energy source. Bacteriological agar is the solidifying agent.
Write Your Own Review