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Biokar
Desoxycholate (0,1 %) Lactose Agar
BK062HA
CAD$129.05
Desoxycholate (0.1%) Lactose Agar is a selective medium for the enumeration of coliform bacteria in milk, dairy products and other food products. The medium is also recommended for the isolation and culture of Shigella.
Dehydrated medium : 500 g bottle
In compliance with regulatory requirements, a USDA permit (VS 16-3) is mandatory for shipments from Canada to the USA due to the inclusion of peptone, an animal byproduct.
Gram-positive bacteria are primarily inhibited by desoxycholate, although sodium citrate and ferric citrate are also effective inhibitors.
The differentiation of enterobacteria is based on their capacity to ferment lactose :
- Lactose-positive strains produce acid which leads to the formation of red colonies in the presence of neutral red.
- Lactose-negative bacteria (Salmonella or Shigella) yield colorless colonies.
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