Campylobacter (CCDA) Agar

Campylobacter (CCDA) Agar

KM0057 Campylobacter (CCDA) Agar is a selective medium for the isolation of Campylobacter spp., particularly C. jejuni and C. coli, from clinical specimens and foodstuffs.

Campylobacter (CCDA) Agar was described by Bolton et al. and formulated to replace blood with a combination of charcoal, ferrous sulphate, and sodium pyruvate. This product is recommended for the isolation of Campylobacter spp. and complies with the requirements of ISO 10272-1:2017, ISO 10272-2:2017, is tested in accordance with ISO 11133:2014, and is a recommended medium in the UK Standards for Microbiology Investigations for isolation of Campylobacter spp. from clinical specimens such as faeces.

Bolton et al. recommended incubating inoculated plates at 37°C to improve isolation rates, but incubation at 41.5°C is recommended for the isolation of the commonly encountered thermophilic species (C. jejuni and C. coli). Selectivity is achieved through the addition of E&O LS0010 Campylobacter CCDA Selective Supplement, which includes a broad-spectrum antibiotic, cefoperazone, and amphotericin B to inhibit yeast and fungi.

Additional Information

Shelf Life (days)

Storage Temp (°C)

Dehydrated Medium Appearance

Prepared Medium Appearance

Dehydrated Medium Colour

Prepared Medium Colour

Dehydrated pH

Prepared pH

Product Description

Organisms Ref. No Result
Campylobacter jejuni NCTC 11322 Growth: Grey spreading colonies
Campylobacter coli NCTC 11366 Growth: Grey spreading colonies
Escherichia coli NCTC 12241 Totally or partially inhibited
Staphylococcus aureus NCTC 12981 Inhibited

Formula*

g/L
Meat peptones 10.0
Beef Extract 10.0
Tryptone 3.0
Bacteriological charcoal 4.0
Sodium Chloride 5.0
Sodium deoxycholate 1.0
Ferrous sulphate 0.25
Sodium pyruvate 0.25
Agar 12.0
Total 45.5
*Adjusted/supplemented as required to meet performance requirements

Preparation

Suspend 45.5g of dehydrated culture medium in 1 litre of deionised/purified water. Heat with frequent agitation and boil for 1 minute to completely dissolve the medium. Autoclave to sterilise at 121°C for 15 minutes before cooling in a water bath to 45-50°C. Aseptically add the appropriate volume of E&O LS0010 Campylobacter CCDA Selective Supplement. Gently homogenize the final medium before aseptically dispensing the specified volume into appropriate sterile containers and allowing to cool.