Yeast Extract (Autolysate)

Yeast Extract (Autolysate) is a yeast extract made by autolyzing Saccharomyces cerevisiae. In place of or in addition to beef extract, this is employed in culture medium as a great stimulant of bacterial growth. A high quality source of amino acids, peptides, vitamins, and other vital nutrients is required for a variety of industrial fermentation processes. Yeast Extract (Autolysate) is guaranteed to be free of GMOs and substances derived from animals. Where a low Amino Nitrogen content is required, it is very effective.

Peptone from yeast is nonmammalian peptone and is completely free from any harmful substances that may lead to disorder such as TSE/BSE which is caused due to infectious protein.

Description: It is derived from Autolysis (Process) of Brewers Yeast (Saccharomyces cerevisiae) further purified to produce free flowing spray dried powder with characteristic proteinous odour.

Application:Source of organic nitrogen recommended in Culture Media for Analytical microbiology, Diagnostics, Laboratory Reagent and Industrial fermentation.

Physiochemical characteristics




Light brown

Solubility in water (5 solution)

Completely soluble in water

Clarity (2 w/v aqueous solution)

100 Clear solution

PH (5 solution)

6.0 7.0 (at room temp.)

Loss on drying


Total nitrogen TN (Kjeldahl Nitrogen)

12.0 to 14.2

Alpha (Amino Nitrogen)

2.5 to 3.5

Total Ash 12.0




Total aerobic microbial count (TPC)

10000 cfu/gm

Total Yeast and mould count (cfu/gm)

100 cfu/gm

Test for Pathogen

  • E.coli
  • Salmonella
  • Pseudomonas aeruginos
  • Staphylococcus aureus

Negative in 10 gm of sample

Culture Response (GPT)


Culture Response (Growth Test)

Escherichia coli


Salmonella typhi


Pseudomonas aeruginosa


Staphylococcus aureus


Enterobacter aerogenes


GPT (Growth Promotion Test) is carried out by using 2 Peptone, 0.5 NaOH and 1.5 Agar in water at optimum/standard lab testing conditions.

Packing / Storage / Shelf Life

  • Packed in 25kg HDPE drum with inner PP lining bag
  • Storage Under 30C in dry conditions
  • Expiry As per label claim

Please note: This product can be customised to suit desired specifications or your inhouse specifications.

To know more, please go to - Tailor-madeProducts