• USA Home
  • 82303 - Peptone from casein, enzymatic digest

82303 Sigma-Aldrich

Peptone from casein, enzymatic digest

for biotechnological purposes

Synonym: 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
assay   ~13% total nitrogen (N) basis
nitrogen analysis   , ~0.3 AN:TN ratio
ign. residue   <17%
loss   <6% loss on drying
pH   7.0±0.5 (2% in H2O)
solubility   H2O: soluble2%, clear, yellow to tan
  water: soluble2%, clear, faintly brown-yellow


Other Notes

Same product — same quality — now Sigma-Aldrich brand


Peptone from casein may be used as medium supplement in the following:
• Bacterial cultures for short term storage of bacteria.
• The basal Glucose Yeast Peptone (GYP) medium.
• As nitrogen supplement in the culture medium of Ceriporiopsis subvermispora.
• Culture medium of Methylobacterium rhodesianum and Ralstonia eutropha.

General description

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

Price and Availability

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, ...

Peer-Reviewed Papers


Set your institution to view full text papers.
Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?