Tryptic Soy Broth

Tryptic Soy Broth is a general-purpose culture medium for the isolation and cultivation of fastidious and non-fastidious microorganisms or the maintenance of stock culture. It is a complex medium suitable for the cultivation and isolation of a wide range of bacteria, yeasts, and molds. The formulation of the TSB medium contains a combination of casein and soy peptones supplying organic nitrogen, particularly amino acids, and long-chained peptides. Sodium chloride maintains the osmotic equilibrium, and the natural sugars from soy peptone are the energy sources.