Yeast Extract Powder
Catalog Number: AS-1010
CAS Number: 8013-01-2
Yeast extract powder is an essential component in microbiology. It produced by drying yeast cell extract. It is a rich source of vital nutrients which support the growth of bacteria. Powdered yeast extract is a complicated combination made up of:Carbon and Nitrogen Sources: It supplies carbon and nitrogen, which are crucial building components for bacterial cells and are frequently scarce in culture conditions.Vitamins: B vitamins, which are essential for a number of bacterial metabolic functions, are especially high in it.Free Amino Acids: Bacteria can directly incorporate these readily available amino acids to produce proteins.Growth Factors: In addition to providing nucleotides and trace elements, yeast extract powder also provides other growth factors that promote the best possible growth of bacteria.
Shelf life and storageStore yeast extract powder between 10-30 °C in a ventilated and low humidity place and protected from light. Close the container tightly after use. Use before expiry date.
For Laboratory Use Only.
Yeast Extract, Powder
Typical analysis
Powder appearance Light yellow to brownish yellow, homogenous, free flowing Solubility Completely soluble in water, insoluble in alcohol 2% solution appearance Clear, light yellow pH (2% in water) 6.5 – 7.5 Chemical analysis
Total nitrogen ≥10.5 Sodium chloride ≤5 Amino nitrogen ≥4.5 Moisture ≤6 Amino acid composition (mg/g)
Aspartic acid 65 Threonine 26 Serine 24 Glutamic acid 115 Proline 23 Glycine 30 Alanine 48 Cysteine – Methionine 9 Isoleucine 31 Leucine 42 Tyrosine 11 Phenylalanine 26 Histidine 14 Lysine 46 Arginine 32 Tryptophan – Microbial Quality ControlCultural response after 18-48 hours incubation at 35-37 °C on Plate Count Agar (AS-1328) prepared by Yeast Extract as a component.
Strain ATCC Growth Escherichia coli 25922 Luxuriant Streptococcus pyogenes 19615 Luxuriant Staphylococcus aureus 25923 Luxuriant Enterococcus faecalis 29212 Luxuriant Bacillus subtilis 6633 Luxuriant Lactobacillus casei 9595 Luxuriant















