Peptones, agars and ingredients
Polypeptone
Mixture of peptones, source of amino acids and vitamins for the cultivation of microorganisms.
- Cat. No.
- LC-1610
- Category
- Peptones, agars and ingredients
- Format
- 500 g
- Storage
- 2 to 25 °C
- Minimum guaranteed shelf life
- 15 months
Polypeptone is a mixture of peptones made up of equal parts of pancreatic digest of casein and peptic digest of animal tissue. It includes the high content of amino acids and small polypeptides characteristic of peptic digest of animal tissue. Polypeptone provides nitrogen, amino acids and vitamins in microbiological culture. It can be used in general culture media as a superior source of nutrients. The growth of some microorganisms may be better than when the individual peptones are used.
Key features
Applications
Nitrogen source for general use.
Industry
Fermentation, ingredients for culture media, manufacturing process.
Technical specifications
| Parameter | Specification | Typical analysis |
|---|---|---|
| Amino nitrogen (AN) | > 3.7% | 4.10% |
| Total nitrogen (TN) | > 10.0% | 13.12% |
| Loss on drying | < 6% | 3.40% |
| AN/TN ratio | N/A | 31.3% |
| Ash | < 15% | 8.80% |
| pH (2% solution) | 6.5-7.5 | 6.8 |
| Storage | 2 to 25 °C |
|---|
Elemental profile
| Element | Value |
|---|---|
| Calcium | 0.03% |
| Magnesium | 0.014% |
| Sodium | 2.12% |
| Potassium | 1.60% |
Amino acids
| Amino acid | Total (g/100 g) |
|---|---|
| Alanine | 4.05 |
| Aspartic acid | 8.83 |
| Cystine | 0.43 |
| Glutamic acid | 15.9 |
| Histidine | 1.81 |
| Lysine | 5.50 |
| Methionine | 1.81 |
| Phenylalanine | 3.34 |
| Proline | 8.21 |
| Serine | 4.33 |
| Tyrosine | 1.42 |
| Valine | 4.37 |
| Arginine | 3.76 |
| Glycine | 5.70 |
| Isoleucine | 3.44 |
| Leucine | 5.99 |
| Threonine | 3.31 |
| Tryptophan | 0.80 |
Quality control
Growth supporting properties
| Peptone agar | Good |
|---|
Microbiological test
| Test | Specification |
|---|---|
| Standard plate count | < 5000 CFU/g |
| Salmonella | Negative |
| Yeasts and molds | < 100 CFU/g |
| Coliforms | 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.