Difco™ PALCAM Medium Base, BD Life Sciences

PALCAM medium base is used with PALCAM antimicrobic supplement in isolating and cultivating Listeria, particularly from foods and milk products.

• Presence of ceftazidime increases selectivity of the medium
• Dehydrated appearance: Pink, free-flowing, homogeneous
• Prepared appearence: Medium red, very slightly to slightly opalescent with slight precipitate
• Solution: 6.8% solution, soluble in purified water upon boiling, solution is dark red, slightly opalescent

PALCAM Medium is based on esculin hydrolysis and mannitol fermentation. All Listeria species hydrolyze esculin as evidenced by a blackening of the medium.