Macconkey agar is used for isolating and differentiating lactosefermenting from lactosenonfermenting gramnegative enteric bacilli. Detect and enumerate enterococci from water, sewage, food products with thermo scientific oxoid macconkey agar no. World famous bbl and difco dehydrated culture media from bd diagnostics. Potato dextrose agar is used for the preparation and maintenance of fungal test strains used in the growth promotion test, suitability of the counting methods and negative controls as described in the harmonized uspepjp. The formulation, based on that described by rappaport and henig 6, is identical to macconkey agar no. Macconkey agar is a selective and differential media used for the isolation and differentiation of nonfastidious gramnegative rods, particularly members of the family enterobacteriaceae and the genus. Macconkey agars macconkey agar macconkey agar base. The crystal violet and bile salts inhibit the growth of grampositive organisms which allows for the selection and isolation of gram. Using a bacteriological loop delivering a known volume they streaked well mixed uncentrifuged urine directly on to a blood agar and a macconkey agar plate and spread the urine in a 1cm wide strip across one edge of the plate. Between the two brands bd diagnostics offers over 250 different formulations for food, beverage, dairy, water and wastewater and industrial microbiology, as well as for. Macconkey agar base is used with added carbohydrate in differentiating coliforms based on fermentation reactions. Macconkey agar mac was the first solid differential media to be formulated which was developed at 20th century by alfred theodore macconkey. Remel macconkey agar is a solid medium recommended for use in qualitative procedures for selective and differential isolation of gramnegative bacilli on the basis of lactose fermentation.
Macconkey agar, usp is prepared according to the u. Macconkey agar composition, principle, uses, preparation. Agar macconkey microbiologia patologia clinica prueba. Summary and explanation in 1900, macconkey first described a neutral red bile salt medium for cultivation and identification of enteric organisms.
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