| Media - Cetrimide Agar For the Identification of Bacteria |
Cetrimide Agar: Click Here to View Images
Cetrimide Agar is used in the identification of P. aeruginosa.
Growth Characteristics:
Cetrimide agar is both a selective and differential agar. Cetrimide agar is
inhibitory to most microbial flora unrelated to P. aeruginosa, and is
indicative of pyocyanin, a green pigment produced by P. aeruginosa. It is
selective because it contains cetrimide, a quaternary ammonia compound,
which inhibits most other bacteria from growing. It is also differential, in
that pyocyanin production is stimulated by the magnesium chloride and
potassium sulfate in the medium. P. aeruginosa produces bright green
colonies on this agar.
Typical Formulation per Liter:
Cetrimide Agar is used in the identification of P. aeruginosa.
Growth Characteristics:
Cetrimide agar is both a selective and differential agar. Cetrimide agar is
inhibitory to most microbial flora unrelated to P. aeruginosa, and is
indicative of pyocyanin, a green pigment produced by P. aeruginosa. It is
selective because it contains cetrimide, a quaternary ammonia compound,
which inhibits most other bacteria from growing. It is also differential, in
that pyocyanin production is stimulated by the magnesium chloride and
potassium sulfate in the medium. P. aeruginosa produces bright green
colonies on this agar.
Typical Formulation per Liter:
- Pancreatic Digest of Gelatin 20.0 g
- Magnesium Chloride 1.4 g
- Potassium Sulfate 10.0 g
- Cetrimide 0.3 g
- Agar 13.6 g
- Glycerol 10.0 mL
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