OXYTETRA GLUCOSE YEAST AGAR BASE W/ BIOTIN

Oxytetra Glucose Yeast Agar Base w/ Biotin were originally formulated by Mossel et al for the isolation and enumeration of yeasts and moulds from foodstuffs. Mossel et al further added Oxytetracycline as a selective agent and found that the use of Oxytetracycline in a medium with a neutral pH gives increased counts of yeasts and moulds as compared to media having a low pH to suppress bacterial growth.
The choice of a suitable media for enumeration of yeasts and moulds greatly depends on the nature of foodstuffs to be tested and the organisms that grow on them. These media remain bacteriostatic when inoculated with not greater than 1 ml of a 10-1 food dilution and incubation at 22?C. The number of yeasts or moulds is calculated per one gram or 1 ml of sample under investigation by multiplying the number of colonies with the dilution factor. Lactic acid bacteria are inhibited on this medium.

for selective isolation and enumeration of yeasts and molds in food products