Tryptone is a pancreatic digest of casein, utillized as a source of nitrogen in many culture media for growing bacteria as well as fungi.

• Lack of detectable carbohydrates
• An excellent choice for bacterial studies based on fermentation reactions
• High level of tryptophan makes it useful in the production of indol
• Used to supplement media in the cultivation of anaerobes (Clostridia and other fermenting organisms, e.g., Lactobacilli)

This preparation supplements media for the cultivation and maintenance of fastidious aerobic and facultative microorganisms such as E. coli and Pseudomonas sp.