Peptones, agars and ingredients
Yeast extract
Source of vitamins, B complex in particular, amino acids and other growth factors for the development of culture media.
- Cat. No.
- LC-1702
- Category
- Peptones, agars and ingredients
- Format
- 500 g
- Storage
- 2 to 25 °C
- Minimum guaranteed shelf life
- 15 months
Yeast extract is a concentrate of the water-soluble portion of selected strain yeast cells, specially grown on a molasses-based medium, that have been autolyzed.
Key features
Applications
Nitrogen source for general use.
Industry
Fermentation, ingredients for culture media, manufacturing process.
Principles and uses
It is rich in vitamins, especially B-complexes, amino acids and other growth factors. It is used in many microbiological culture media formulations as an excellent growth source.
Yeast extract is considered a non-animal product and is used extensively for many non-animal formulations of bacterial, fungal, mammalian and insect cell culture.
Technical specifications
| Ash | < 16% |
|---|---|
| Amino nitrogen (AN) | > 4.5% |
| Total nitrogen (TN) | > 10% |
| pH | 6.8-7.2 |
| Chlorides (as NaCl) | < 0.5% |
| Dry matter | > 94% |
| Proteins | > 62.5% |
| Storage | 2 to 25 °C |
Amino acids
| Amino acid | Total (g/100 g) |
|---|---|
| Alanine | 3.6 |
| Arginine | 2.3 |
| Aspartic acid | 5.1 |
| Cysteine | 1.1 |
| Glutamic acid | 9.5 |
| Glycine | 2.4 |
| Histidine | 1.0 |
| Isoleucine | 2.8 |
| Leucine | 3.9 |
| Threonine | 2.7 |
| Lysine | 4.0 |
| Methionine | 0.3 |
| Phenylalanine | 2.5 |
| Proline | 1.7 |
| Serine | 2.4 |
| Tryptophan | 0.1 |
| Tyrosine | 1.0 |
| Valine | 3.1 |
Quality control
| Test | Specification |
|---|---|
| Total mesophilic bacteria | < 5000 CFU/g |
| Total coliforms | < 5 CFU/g |
| Yeasts | < 50 CFU/g |
| Molds | < 50 CFU/g |
| E. coli | Negative |
What you receive
The product
Shipped under controlled temperature when the product requires it.
Lot certificate
Every lot comes with its certificate.
Tracked shipment
Follow your shipment live, from our warehouse to your lab.
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Frequently asked questions
Can I ask for formats other than those listed?
Yes: custom formats and OEM packs are available on request. Tell us the quantities you need.
How do I see the prices?
Prices are shown after you sign in to the customer area, with your account discount already applied.
How long does delivery take?
We give you the availability with the quote, within 24 hours of your request.