Knowledge
Lactobacilli
MRS Broth and MRS agar
MRS Medium, named for its inventors De Man, Rogosa and Sharpe is a selective culture medium designed to favour the luxuriant growth of Lactobacilli in bacteriological cell cultures.
Although MRS medium is selective for lactobacilli but some growth of leuconostocs and pediococci may occur. One of the constituents of MRS is sodium acetate, which suppresses the growth of many competing bacteria.
Yeast extract and meat extract present in MRS medium provide sources of carbon, nitrogen, and vitamins for general bacterial growth. The yeast extract also contains vitamins and amino acids specifically required by Lactobacilli.
Polysorbate 80 is a surfactant which assists in nutrient uptake by Lactobacilli.
Magnesium sulfate and manganese sulfate provide cations used in metabolism.
Why choose Formedium?
Bespoke culture
solutions
solutions
Whether you’re using industry standard media or producing your own formulation, our technical team works closely with you to deliver a consistent, reliable and cost-effective solution.
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fulfilment
With UK-based production, global distribution and streamlined processes, we’re able to respond quickly to urgent timelines without compromising on quality.
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We hold ISO 9001 certification and have ISO 14001 environmental accreditation. Every batch of powdered media and every ingredient is fully traceable.
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Testimonials
What our customers say
"Formedium provide not only excellent products but also a level of personal service that truly sets them apart. They take the time to understand their customers’ needs and consistently go above and beyond, all while maintaining a highly professional approach. I look forward to continuing to work with Formedium and the team for many years to come."
Michael Hannan
University of Dundee
“Formedium's technical support assisted us to make ready-made Aspergillus medium, saving us countless hours in preparation and have consistency across experiments going forwards. Their cost-effectiveness impressed us so much that we've now switched all our medium consumables to them!”
Norman Van Rhijn
University of Manchester
“Formedium has been a long-term supplier of media products to our fermentation facility. From day one, their product quality and customer service has been second to none. Impressively, their outstanding service has always been delivered alongside competitive pricing and a sense of that personal touch. Formedium have even formulated and packaged media, specifically for our needs, and their technical support has always been on hand when needed.”
Dr Shane Palmer
Cambridge Biomedical Campus
