PALCAM Agar Base (Dehydrated), Each

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Detect and isolate Listeria monocytogenes from food samples with Thermo Scientific™ Oxoid™ PALCAM Agar Base (Dehydrated). The PALCAM Agar Base is highly selective and contains double indicator system that allows easy differentiation of Listeria monocytogenes, based upon aesculin fermentation, lack of mannitol fermentation and resultant pH change.Listeria monocytogenes is the most common pathogenic Listeria spp. and has been shown to be pathogenic to both humans and animals. PALCAM Medium is based on the formulation described by Van Netten et al.1 and is recommended for the isolation of Listeria monocytogenes from foods.Selective: the addition of lithium chloride, ceftazidime, polymyxin B and acriflavine hydrochloride make the medium highly selective for Listeria monocytogenes.Easy-to-read: monocytogenes forms brown/black colonies with a black halo while mannitol positive accompanying flora, such as staphylococci and enterococci, grow as yellow colonies.PALCAM Medium allows easy differential diagnosis of L. monocytogenes by utilizing the double indicator system.Aesculin and ferrous ironMannitol and phenol redListeria monocytogenes hydrolyses aesculin resulting in the formation of a black halo around colonies. L. monocytogenes does not ferment mannitol so can be easily differentiated from contaminants, such as enterococci and staphylococci, which ferment mannitol producing a change from red to yellow in the pH indicator phenol red.Not all products are available for sale in all territories. Please inquire.Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.This product(s) resides on a Fisher Scientific GSA or VA contract. If you are viewing this page as a nonregistered user, the price(s) displayed is List Price. To view your GSA or VA contract pricing, log in using your account number, or become a registered user by contacting one of our Customer Service teams. You can also view your contract price by searching for this item(s) on GSA Advantage. To place an order, contact Fisher Scientific Customer Service.