胰蛋白胨Oxoid LP0042
蛋白胨是酪蛋白的胰消化。它可用于在任何制定***或胰蛋白酶消化酪蛋白中。酪蛋白是牛奶的主要蛋白质是氨基酸态氮的丰富来源
TRYPTONE
Code: LP0042
Tryptone is a pancreatic digest of casein. It can be used in any formulation where a pancreatic or tryptic digest of casein is specified. Casein is the main protein of milk and is a rich source of amino acid nitrogen. The profile shows a broad spread of peaks throughout the molecular weight range characteristic of a pancreatic digest. This hydrolysate is often mentioned in published works, either as a c***tituent of culture media for metabolic or growth studies, or for other purposes where high performance and uniformity of composition are of paramount importance. It has a high tryptophan content and is therefore used in media for testing the indole reaction.
Tryptone can detect `flat-sour’ or `sulphide’ spoilage organi***s in the canning industry and is also used in sterility testing media.
It is a c***tituent of media used in fermentation processes to produce antibiotics, extra-cellular protein, *** and diphtheria toxoid.
|
Typical analysis |
(% w/w) |
|
Total Nitrogen |
13.3 |
|
Amino Nitrogen |
3.7 |
|
Sodium chloride |
0.4 |
|
pH (2% solution) |
7.3 &plu***n; 0.2 |