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Thermo Scientific™ Violet Red Bile Glucose Agar (Dehydrated)

Detect and enumerate Enterobacteriaceae in food products with this selective medium.

Brand:  Thermo Scientific™ CM0485B

1342.33 DKK valid until 2025-08-24
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Product Code. 10528453

  • 2085.00 DKK / 500g
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Description

Description

Detect and enumerate Enterobacteriaceae in food products with Thermo Scientific™ Oxoid™ Violet Red Bile Glucose Agar (Dehydrated). This glucose-containing selective medium gives reproducible counts of typical colonies for food safety analysis. In the examination of foodstuffs, detection of the Enterobacteriaceae that ferment glucose to produce acid and/or gas has been recommended1,2

Guidelines for the examination of food samples during microbiological food safety testing recommend detection of the Enterobacteriaceae. In addition to coliforms, this group includes salmonellae and shigellae, which do not ferment lactose, and enterotoxigenic Escherichia coli. It also contains organisms, such as Klebsiella and Citrobacter, which are more resistant to heat than coliforms and are, therefore, better indicators of failure of processes that use minimal heat.

The difficulties of measuring the total Enterobacteriaceae content of food samples have been studied by Mossel3, who showed that the addition of glucose to an existing medium for the detection of coliforms improves the performance—as shown for Violet Red Bile Glucose Agar.

  • Easy-to-read results: due to the inclusion of neutral red indicator and crystal violet in the medium Enterobacteriaceae form purple-pink colored colonies.

Violet Red Bile Glucose Agar has been developed to satisfy all of the below criteria of an approved media which complies with the recommendations of ISO:

  • Media should be clear and yield colonies of satisfactory size to give reproducible counts of typical colonies of Enterobacteriaceae.
  • When challenged for intrinsic toxicity by an anaerobic metabolic test using a strain of Yersinia enterocolitica (Serotype 03) as a sensitive indicator, media must promote adequate growth, acid formation and, where required, adequate gas formation.
  • Media have to satisfy the confirmation rate of typical colonies, i.e., the number of colonies confirmed as Enterobacteriaceae divided by the number of colonies tested.

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Remel™ and Oxoid™ products are now part of the Thermo Scientific brand

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Specifications

Specifications

Industrial Reference: AFNOR, BSI, ISO, NMKL.
Powder
500 g
Violet Red Bile Glucose Agar (Dehydrated)
Agar
For 13.0L medium
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