Description
Listeria Identification Agar Base (PALCAM) is recommended for selective isolation and identification of Listeria species from clinical and non-clinical samples. It is also recommended for the isolation of L. monocytogenes from foods. The addition of egg yolk (2.5% v/v) to medium has been reported to aid in the repair of damaged cells. Medium-containing blood when overlaid on the medium enables to differentiation and enumeration of haemolytic Listeria species. On PACAM Agar, colonies of Listeria appear as grey-green with a black precipitate, following inoculation and incubation at 35°C for 24-48 hours under aerobic or microaerophillic conditions.
Listeria Identification Agar Base (PALCAM)
Intended use
Recommended for selective isolation and identification of Listeria species from clinical and non-clinical samples.
Ingredients (Gms / Litre)
- Peptone: 23.000
- Starch: 1.000
- Sodium chloride: 5.000
- Mannitol: 10.000
- Ammonium ferric citrate: 0.500
- Esculin: 0.800
- Dextrose (Glucose): 0.500
- Lithium chloride: 15.000
- Phenol red: 0.080
- Agar: 13.000
- Final pH: ( at 25°C) 7.0±0.2
**Formula adjusted, standardized to suit performance parameters
Directions
Suspend 34.44 grams in 500 ml purified/distilled water. Heat to boiling to dissolve the medium completely. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes. Cool to 45-50°C and aseptically add rehydrated contents of 1 vial of Listeria Selective Supplement (PALCAM) (FD061). Mix well and pour into sterile Petri plates. Click for the Technical Data Sheet
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