Casamino acids is a mixture of amino acids and some very small peptides obtained from acid hydrolysis of casein. It is typically used in microbial growth medium, growth media. It has all the essential amino acids except tryptophan, which is destroyed by digestion with sulfuric acid, sulfuric or hydrochloric acid. Casamino acids is similar to tryptone, the latter differing by being an incomplete enzymatic hydrolysis with some oligopeptides present, while casamino acids is predominantly free amino acids.

Uses

Casamino acids supplies a completely hydrolyzed protein nitrogen source. It contains a small amount of cystine. Tryptophan and vitamins are destroyed by the acid treatment. The remaining amino acids (in varying amounts) are a source of nutrients for various microorganisms. Amino acids are highly solubility, soluble and suitable for use in tissue culture. Salt content is typically 30-40%. Casamino acids are either found in the Daptacel brand DPT vaccine#DTaP, DTaP vaccine or used in its manufacture.

Appearance

*White to light Tan (color), tan, Homogeneity and heterogeneity, homogeneous, free flowing powder *Solubility (2%) *Colourless to light yellow, Transparency and translucency, clear in solution

References

Peptides Microbiological media ingredients {{Microbiology-stub