Casein Plates contain the major milk protein found in milk. Organisms were grown on Casien agar for 72 hours at 37C to look for the presence of the exoenzyme proteases/caseases . Pseudomonas aeruginosa, casein hydrolysis, as noted by a zone of clearing around the organism, as well as a green diffusable pigment pyocyanin. Serratia marcesens, casein hydrolysis as well as red colony pigment prodigiosin E. coli, growth but no casein hydrolysis.
Source: Reblogged from Microbeworld
Image credits: Tasha Sturm