Formedium - Creating the Culture for Discovery Retina Logo
Product search 


Escherichia Coli Media

Formedium™ manufactures a large range of powdered Escherichia Coli media

Read more

The main components of most Esherichia Coli media are:-Tryptone, enzymatic digest of casein.
Tryptone is a pancreatic digest of casein. Casein is the main protein of milk and is a rich source of amino acid nitrogen. Amongst all the amino acids, Tryptophan is present in the highest concentrations.
Due to the rich nutritional properties, Tryptone is added to media as an accelerator to increase the yield of organisms and is recommended where a rapid and luxuriant growth of micro organisms is required.

Yeast Extract
Yeast Extract is a spray dried extract manufactured by complete autolysis, i.e. a transformation of proteins into peptides and amino acids, implemented through the proteolytic enzymes present in yeast cells.
The cell membranes are discarded, enabling completely soluble yeast extracts to be obtained. In LB media, Yeast Extract is an essential nitrogen source for bacteria besides peptides and amino acids. Yeast extract also contains purine and pyrimidine bases, carbohydrates and water soluble vitamins of B group.

As the main carbon source

Sodium Chloride
To set the osmolarity of the medium at a suitable osmotic environment.

When added, to solidify the medium.

Like Casamino acids, Magnesium sulfate, Maltose, Thymidine.

In fact most Escherichia Coli media do contain these components, but all in different compositions and ratios to obtain an optimal result for cell growth and yield, propagation of bacteriophages and preparation of competent cells.

Formedium Services

Crystal and molecular structure of RmlA
Dr. Magnus S. Alphey, University of St. Andrews

Crystals of MscS

Above 2 images: Crystals of MscS
Dr. Magnus S. Alphey, University of St. Andrews

Product search


Stripe Payment Logos
PayPal Payment Logos
2024 ISO 9001: 2015 Accreditation

Copyright © 2023 ForMedium™. All Rights Reserved.

Name & Registered Office: Formedium Ltd. Norfolk House, 22-24 Market Place, Swaffham, Norfolk, England, PE37 7QH Registered in England and Wales. Company No. 04351225. VAT No. GB 803727440

linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram