Yeast Extract Powder

Description

When a yeast cell is inactivated, a natural digestion process called “autolysis” starts. During this process the yeast’s own enzymes break down proteins and other parts of the cell. This causes the release of peptides, amino acids [glutamic acid – MSG*], vitamins and other yeast cell components which, once the insoluble components have been removed, is called “Yeast Extract.

Yeast bacteriological use and cell cultures, and is an excellent stimulator of bacterial growth. Yeast Extract is generally employed in the concentration of 0.3% -0.5%. Yeast Extract is typically prepared by growing baker’s yeast, Saccharomyces spp., in a carbohydrate-rich plant medium. Yeast Extract is the total soluble portion activity is stopped by a heating step. The resulting Yeast Extract is filtered clear and dried into a powder by spray drying. Yeast Extract has been successful in culture media for bacterial studies in milk and other dairy products. 1-5 Several media containing Yeast Extract have been recommended for cell culture applications.

by spray drying. Yeast Extract has been successful in culture media for bacterial studies in milk and other.