For the selective enrichment of Gram-negative microorganisms, especially Shigella spp and .Salmonella spp from all types of research materials
محیط کشت میکروبیولوژی Dehydrated Culture Media از کمپانی Condalab
GN Enrichment Broth (Hajna) was developed by Hajna for the selective enrichment of enteric Gram-negative microorganisms. GN stands for Gram-negative. It is intended for use in the detection of Salmonella spp. and Shigella spp. from clinical and non-clinical specimens. Tryptose provides nitrogen, vitamins, minerals and amino acids essential for growth. Mannitol and dextrose are the fermentable carbohydrates providing carbon and energy. Mannitol is provided in a higher concentration than dextrose to enhance the growth of mannitol-fermenting species, such as Salmonella and Shigella, and limits the growth of Proteus and other dextrose-fermenting bacteria. Sodium desoxycholate and sodium citrate inhibit the growth of Gram-positive organisms. Potassium phosphate is a reagent with a very high buffering capacity. Most potassium phosphate buffer solutions consist of mixtures of the monobasic and dibasic forms of potassium phosphate to varying degrees, depending on the desired pH.