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Veterinary bacteriology: information about important bacteria
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Fastidious anaerobic agar (FAA)

Fastidious anaerobic agar (FAA) plate

The figure shows an FAA-plate on which bacteria have not been cultivated. Note the colour, which is darker than ordinary blood agar plates. - Click on the image to enlarge it.

Image: Karl-Erik Johansson (BVF, SLU) och Lise-Lotte Fernström (BVF, SLU)

Applications:

Fastidious anaerobic agar (FAA plates) are used for cultivation of anaerobic bacteria of clinical significance under oxygen-free conditions.

The medium contains:

  • peptone (enzymatic digests of animal tissue or milk, which is a source for nitrogen, carbohydrates, and vitamines)
  • starch and bicarbonate, which neutralize toxic metabolites
  • hemin and vitamin K, which constitute growth factors for many anaerobic bacteria
  • cysteine, which decreases the redox potential of the medium
  • pyruvate, which contributes to the neutralization of hydrogen peroxide
  • horse blood (5%), which contains nutrients and also makes it possible to observe hemolysis

Other comments:

Note that facultatively anaerobic bacteria are also growing on these plates, but not as good as on ordinary blood agar plates.

Updated: 2018-05-09.


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