Standard Methods Caseinate Agar (Revised as Standard Methods M-Protein Agar) 100G

Standard Methods M-Protein Agar (Formerly Standard Methods Caseinate Agar) is recommended by APHA for detection of proteolytic microorganisms. It has M-protein (sodium caseinate) as a major protein source for the organisms. Proteolytic organisms form white or off white precipitate around the colony. Organisms which are strongly proteolytic can breakdown the precipitate formed around the colonies to soluble components with the formation of an inner transparent zone. For the enumeration of proteolytic psychrotropic bacteria, inoculated plates should be incubated for 10 days at 7°C.