Tryptone

Description: Tryptone is a pancreatic digest of casein and used as a nitrogen source in culture media. It is capable of supporting growth of fastidious and nonfastidious microorganisms. Non-detectable concentration of carbohydrates allows its use in differentiating bacteria on the basis of their ability to ferment various carbohydrates. It can be used for indole production because of its high tryptophane concentration. It is recommended by APHA and USP as a casein peptone in media used for detecting bacteria in dairy products, drinking and waste water and in antibiotic test media.

Typical Analysis:

Physical Analysis:
Ash ................................................ 6.6%
Moisture ..................................... <5.0%
Total Nitrogen ............................. 13.0%
Final pH (2% Solution) ................ 7.0

Amino Nitrogen ............................. 4.4%
NaCl ................................................ 2.8%
Protein (N x 6.25) ................... 83.0%

Storage: Store the sealed bottle containing the dehydrated medium at 2 to 30.0°C. Once opened and recapped, place the container in a low humidity environment at the same storage temperature. Protect it from moisture and light. The dehydrated medium should be discarded if it is not free flowing or if the color has changed from the original beige color.

Also known as Peptone 140.