1.03753

Yeast extract

medium granules, suitable for microbiology

• Synonym(s): Yeast extract granulated,
• CAS Number: 8013-01-2
• MDL number: MFCD00132599
• UNSPSC Code: 41106212
• EC Index Number: 232-387-9
• NACRES: NA.74

Properties

• biological source: yeast
• Quality Level: 200
• 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

Description

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

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable