Description
Synonyms: YE, Baker’s yeast extract
General description
Yeast extract is an extract of autolyzed yeast cells. Yeast extract is a mixture of amino acids, peptides, water soluble vitamins and carbohydrates and can be used as additive for culture media. It is a non-animal and low endotoxin peptone suitable for use in fermentations media for cultivation and resuscitation of a large variety of fastidious microorganisms. It is rich in vitamins and other nutritive substances and so, recommended for general laboratory media
Application
Yeast extract is recommended for use in culture media and for the mass cultivation of various microorganisms. It provides multi-functional nutrient supplements that can also be used in microbial fermentation.
PROPERTIES
biological source
Saccharomyces cerevisiae
Pack Size
1 kg
grade
for technical purposes (in fermentation)
sterility
non-sterile
Assay
≤3% amino-nitrogen basis
≥9% total nitrogen (N) basis
form
powder
shelf life
limited shelf life, expiry date on the label
composition
amino-nitrogen, ≤3%
total nitrogen (N), ≥9%
impurities
≤16% ash
≤8% non-dissolved
loss
≤8% loss on drying
pH
6.5-7.5 (2% in H2O)
solubility
H2O: 2%, turbid, yellow
application(s)
food and beverages
microbiology
storage temp.
2-25°C
suitability
molds
yeasts
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