A collagenous protein used for the solidification of culture media and for the detection and differentiation of certain proteolytic bacteria.

A refined bile salt, comprising mainly sodium cholate and sodium desoxycholate.

It is used as a selective agent culture media such as Violet Red Bile Agar for the enumeration of coliforms, MacConkey Agar No. 3 for the isolation and differentiation of enteric organisms, and SS Agar for the isolation of enteric pathogens. This fraction of bile is highly active, allowing maximum selection of organisms of enteric origin at relatively low concentrations (0.15%).

This complements the nutritive properties of peptones in culture media and is often used as an added enrichment.

Beef extract can be used as a direct replacement for meat peptones and as it contains no carbohydrates, can be used as a component of media for fermentation studies.

Product Code: MC004

A rich mixture of tryptone and meat peptones which fulfils the nutritional demands of a wide variety of micro-organisms.

This peptone is used in many LAB M culture media formulations.