Product number: 7184

Yeast Extract is an autolysate of yeast cells used in preparing microbiological culture media in a laboratory setting. Yeast Extract is not intended for use in the diagnosis of disease or other conditions in humans.

Yeast Extract is the water-soluble portion of autolysed yeast. The autolysis is carefully controlled to preserve naturally occurring B-complex vitamins. Yeast Extract is prepared and standardised for 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. The yeast is harvested, washed, and resuspended in water, where it undergoes autolysis, i.e., self-digestion using the yeast's enzymes. Yeast Extract is the total soluble portion of this autolytic action. The autolytic 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. Several media containing Yeast Extract have been recommended for cell culture applications.

Order Details

Product # Product Description
7184A Yeast Extract, 500 g
7184T Yeast Extract, 5 kg
7184C Yeast Extract, 10 kg

Reference Material

7184 - Yeast Extract, Product Information Sheet [English] [Portuguese]
7184 - Yeast Extract, Safety Data Sheet [Danish] [Dutch] [English] [English] [EU English] [Finnish] [French] [German] [Italian] [Portuguese] [Spanish, Mexico] [Swedish]

For additional information or questions about product SDS documents, please contact Neogen at

Please check with your local representative for availability of these products within your region.