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95039 Sigma-Aldrich

Tryptone enzymatic digest from casein

for biotechnological purposes

Synonym: Peptone from casein, tryptic digest, Peptone from casein



Related Categories Base Ingredients for Media, Microbiology, Protein Sources (Peptones & Extracts), Protein Sources (milk derived), Protein Sources A to Z More...
grade   for biotechnological purposes
impurities   ≥12% total nitrogen (N)
  ≥3.5% amino N
ign. residue   ≤17.0%
loss   ≤6.0% loss on drying
pH   6.0-7.5 (25 °C, 2% in H2O)
solubility   H2O: soluble2%, clear, faintly to slightly yellow


General description

A rich source of amino acids and peptides recommended for culture media in analytical microbiology and in industrial fermentation.

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Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Protocols & Articles


Microbiology Introduction

An initial aim of all microbiologists is the reproducible growth of their microbial cultures, no matter whether the microorganisms are of natural origin or have been genetically engineered by man. Re...
Keywords: Absorption, Aerobic, Anaerobic, Antibiotics, Antimicrobials, Buffers, Culture media, Diffusion, Environmental, Filtration, Genetic, Growth factors, Metabolism, Phase transitions, Precipitation, Reductions, Respiration, Sample preparations, Vitamins

Microbiology's Basic Ingredient: Protein Sources (Peptones)

Peptones and extracts are excellent natural sources of amino acids, peptides and proteins in growth media. They are most often obtained by enzymatic digestion or acid hydrolysis of natural products, ...

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