Buffered Peptone Water w/ Casein 500G

Buffered Peptone Water w/ Casein is used as a pre-enrichment medium for increasing the recovery of injured Salmonella species from food particularly cocoa, chocolate, confectionary etc. prior to selective enrichment and isolation.Recently ISO committee has also recommended this pre-enrichment medium for the detection of Enterobacteriaceae from food stuffs and other materials. Addition of 50g/l M-Protein Powder or skimmed milk is recommended for testing cocoa and cocoa containing products (more than 20%) . The addition of M-Protein Powder is necessary to inhibit bactericidal substances present in cocoa or cocoa containing products.