92144 Millipore

Yeast Extract

for microbiology



Related Categories Base Ingredients for Media, Microbiology, Yeast Extracts More...
Quality Level   200
grade   for microbiology
assay   ≥10% total nitrogen (N) basis
  ≥4.5% amino-nitrogen basis
form   powder
shelf life   limited shelf life, expiry date on the label
application(s)   microbiology: suitable (preparation)
ign. residue   ≤15%
loss   ≤8% loss on drying
pH   6.5-7.5 (25 °C, 2% in H2O)
solubility   H2O: 2%, clear, light yellow to brownish-yellow
Featured Industry   Food and Beverages
suitability   molds


General description

Yeast extract is manufactured under controlled conditions to retain its vitamin content and other nutritive values such as free amino acids. It is rich in vitamins, especially those belonging to B complex and is often used to supply these factors in culture media at a concentration of 0.3 - 0.5%. It is particularly used in media for cultivation of microorganisms encountered in milk or other dairy products.

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Protocols & Articles


Microbiology Introduction

An initial aim of all microbiologists is the reproducible growth of their microbial cultures, no matter whether the microorganisms are of natural origin or have been genetically engineered by man. Re...
Keywords: Absorption, Aerobic, Anaerobic, Antibiotics, Antimicrobials, Buffers, Culture media, Diffusion, Environmental, Filtration, Genetic, Growth factors, Metabolism, Phase transitions, Precipitation, Reductions, Respiration, Sample preparations, Vitamins

Microbiology in Plant Peptones

In a time of animal diseases, like BSE, TSE or foot and mouth disease, it is important to have a good alternative possibility. 100% vegetable protein source that means no risk of BSE/TSE, no problems...

Microbiology's Basic Ingredient: Protein Sources (Peptones)

Peptones and extracts are excellent natural sources of amino acids, peptides and proteins in growth media. They are most often obtained by enzymatic digestion or acid hydrolysis of natural products, ...

Peer-Reviewed Papers


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