east Extract is a water soluble extract of fresh autolysed yeast (Saccharomyces cerevisiae) cells prepared and standardized for use in microbiological culture media. It is a source of universal growth factors such as peptides, free amino acids, purine and pyrimidine nucleobases, trace elements and hydro soluble vitamins from the B complex. It is commonly added to culture media in concentrations between 0.2% and 1%. Scharlau’s Yeast Extract does not contain any component of animal origin and therefore has no risk of transmission of animal spongiform encephalopathies (TSE). It is not derived from or produced using GMOs or their derivatives and all reasonable steps have been taken to avoid contamination from GMOs or their derivatives. This has been verified by a declaration from previous suppliers.