1.03753
Yeast extract
medium granules, suitable for microbiology
Synonym(s):
Yeast extract granulated,
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About This Item
biological source
yeast
Quality Level
form
medium granules
autoignition temp.
>200 °C
shelf life
limited shelf life, expiry date on the label
packaging
pkg of 25 kg
pkg of 5 kg
pkg of 500 g
pH
7.0 (20 °C, 10 g/L in H2O)
solubility
410 g/L
density
0.5 g/cm3 at 20 °C
bulk density
490 kg/m3
application(s)
microbiology
storage temp.
15-25°C
Related Categories
General description
Yeast extract granulated is manufactured from selected strains of Saccharomyces cerevisiae. It is manufactured under controlled conditions to retain its vitamin content and other nutritive values, such as peptides, free amino acids, nucleic acids, minerals, trace elements, and phosphorous compounds. It is rich in vitamins and is often used to supply these factors in culture media at a concentration of 0.3 - 0.5%. Yeast extract provides a complete source of nutrients for microorganisms and is particularly useful for the cultivation of fastidious bacteria that require specific nutrients or additional growth factors. It can be used alone or in combination with other sources of nutrients, such as peptones or salts.
Application
Yeast extract is commonly used as an ingredient in many microbial culture media for the growth and identification of bacteria, yeasts and molds from various pharmaceutical, environmental, food and beverage samples.
Features and Benefits
Our Granulated media are:
- Safer - Significant reduction of inhalation of toxic and allergenic substances resulting in fewer allergic responses. Less contamination of working tools and environment
- Accurate - No separation of components and no clumping, even under humid or warm conditions, ensure a uniform product with higher performance accuracy
- Fast - Rapid and uniform dissolution in water
- Easier - Easier handling and weighing due to the better flow properties. Media do not stick to the flask or container
- Reliable - Homogenous distribution of ingredients guarantees high reproducibility even if only small amounts of media are used.
Linkage
Replaces: 1.03753
Analysis Note
Appearance (colour)brownish-yellowAppearance (description)granulesIdentityconformspH-value (2%; water)5.5 - 7.2N (Nitrogen) (calculated on dried substance)≥ 10.5%Sulfated ash (600 °C)≤ 17.0%Heavy metals (as Pb)≤ 0.005%Loss on drying (50 °C; <670 Pa; 3 h)≤ 5.0%Ca (Calcium)≤ 0.05%Mg (Magnesium)≤ 0.10%Chloride (Cl) (as NaCl)≤ 5.0%Phosphorous compounds (as P)≤ 2.5%Suitability for microbiologypasses test
Storage Class
11 - Combustible Solids
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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