Thermo Scientific™ Modified Tryptone Soya Broth (Dehydrated)

Description

• Selectively enrich and isolate Escherichia coli O157 from food or fecal samples with Thermo Scientific™ Oxoid™ Modified Tryptone Soya Broth (Dehydrated)
• The modifications to the original medium include an increase in the concentration of the buffer, dipotassium hydrogen phosphate and bile salts
• The bile salts inhibit the growth of spore formers and enterococci but allow the growth of Escherichia coli O157
• E
• coli form part of the commensal microbial flora of all animals, including humans
• Most strains of coli are non-pathogenic and serve a useful function within the intestines by suppressing the growth of harmful bacteria
• Some strains of E
• coli are capable of causing gastroenteritis in humans, among them is E
• coli serotype O157: H7, a rare variety which produces toxins that are closely related to the toxin produced by Shigella dysenteriae
• This toxin causes a severe gastroenteritis in humans commonly referred to as hemorrhagic colitis
• Many selective broths have been formulated for the enrichment of Escherichia coli O157
• Modified Tryptone Soy Broth is a nutritious, selective base which was devised by Doyle and Shoeni
• 1 The broth was incubated for at 37°C for 24 hours in shaken flasks
• Szabo and co-workers 2 also used Modified Tryptone Soy Broth and found incubation at 43°C with agitation gave better recovery rates from inoculated food samples
• Not all products are available for sale in all territories
• Please inquire
• Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.