Our Casein Peptone is a pancreatic digest of casein ideally suited to the cultivation of a large range of bacterial strains, this includes some fastidious organisms. For instance: http://www.nature.com/articles/srep04236
Casein peptone is a pancreatic digest of casein. Pancreatic digestion produces a balanced mixture of amino acids, including essential amino acids, in optimal ratio and with low molecular weight peptides. This makes this formulation of peptone very suitable for those organisms that prefer peptides to amino acids. It can be used in the production of toxins, vaccines, enzymes, in fermentation applications and microbiological culture media, especially in blood-containing media.