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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胰腺或胰蛋白酶消化酪蛋白中。酪蛋白是牛奶的主要蛋白質是氨基酸態(tài)氮的豐富來源
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 constituent 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 organisms in the canning industry ａnd is also used in sterility testing media.
It is a constituent of media used in fermentation processes to produce antibiotics, extra-cellular protein, interferon ａnd diphtheria toxoid.
Typical analysis | （% w/w） |
Total Nitrogen | 13.3 |
Amino Nitrogen | 3.7 |
Sodium chloride | 0.4 |
pH （2% solution） | 7.3 ± 0.2 |
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