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Oxytetracycline Glucose Agar (OGA)
Oxytetracycline Glucose Agar is used for the detection and enumeration of yeasts and molds in food products.
The typical composition corresponds to that defined in the standards ISO 6611 and NF V08-059.
Available as dehydrated medium (without Oxytetracycline): 500 g bottle
Also available as ready-to-melt medium (without Oxytetracycline) : 10 vials of 110 ml (BM02208).
Either medium is to be used with BS00808 supplement (Oxytetracycline 50 mg).
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.
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