CULTURE MEDIA - BEEF EXTRACT
Beef extract is derived from infusions of beef and provides an undefined source of nutrients. Beef extract is not exposed to the harsh treatment used for protein hydrolysis so it can provide some of the nutrients, lost during peptone manufacture. Beef extract is a mixture of peptides , amino acids, nucleotide fractions, organis acids, minerals and vitamins.
Beef extract is derived from infusions of beef and provides an undefined source of nutrients. Beef extract is not exposed to the harsh treatment used for protein hydrolysis so it can provide some of the nutrients, lost during peptone manufacture. Beef extract is a mixture of peptides , amino acids, nucleotide fractions, organis acids, minerals and vitamins.
| Quality Control | |
|---|---|
| PHYSICAL DATA | |
| Appearance | Light cream amorphous powder |
| Odour | Characteristic |
| pH (2% solution) | 6.0 to 7.0 |
| Solubility | Freely soluble in water forming sparkingly clear soln |
| Loss on Drying | Not more than 5.0% |
| CHEMICAL DATA | |
| Total Nitrogen (Kjaldal method) content TN | Not less than 13.5% |
| Amino Nitrogen AN | Not less than 4.0 % |
| Total Protein content (kjaldal factor- 6.25) |
Not less than 85% |
| Degree of Hydrolysis DH = (AN/TN) X 100 |
Not less than 30% |
| Ash | Not more than 10% |
| Proteose Test (As per USP) | Passes |
| Coagulable protein (As per USP) |
Passes |
| BACTERIOLOGICAL DATA | |
| Total Plate Count | Not more than 5000CFU/gm |
| E.coli/10 gm | Absent |
| Salmonella/10gm | Absent |