Malt Extract is a dehydrated extract of malt for use in preparing microbiological culture media in a laboratory setting. Malt Extract Powder is prepared from aqueous extract of sprouted malt grains and dried at low temperature to preserve nutrients present in the form of carbohydrates and nitrogenous substances.

Malt Extract is a useful ingredient of culture media designed for the isolation, cultivation and enumeration of yeasts and molds. This ingredient is particularly suitable for yeasts and molds because it contains a high concentration of carbohydrates, particularly maltose and other saccharides as energy sources. Dextrin and Glycerin are the carbon sources, and Peptone is a nitrogen source.

It is also recommended for use in conjunction with other specific media such as Orange Serum Agar, Yeast Extract Agar or other media for yeasts and fungi.