Thermo Scientific™ MacConkey Broth

Description

• Selectively and differentially isolate enteric gram-negative bacilli using Thermo Scientific™ Remel™ MacConkey Broth
• MacConkey Broth is a modification of the original bile salt broth first described by MacConkey in 1900, which contained litmus as an indicator and sodium taurocholate to inhibit gram-positive organisms 1
• In further testing, MacConkey recommended replacing litmus with neutral red 2
• In 1953, Childs and Allen replaced neutral red with bromcresol purple, a less inhibitory indicator 3
• Selectively and differentially isolate enteric gram-negative bacilli using MacConkey Broth
• This medium is used for presumptive identification of coliforms
• Coliforms are organisms that are present in the environment and in the feces of all warm-blooded animals and humans
• Their presence in drinking water indicates that disease-causing organisms (pathogens) could be in the water system
• Selective: Oxgall is a selective agent which inhibits gram-positive organisms
• Ease of differentiation: Lactose and bromcresol purple indicator enable the differentiation of lactose fermenting gram-negative bacilli
• Conforms to USP and EP : It is formulated and tested in conformance with harmonized United States Pharmacopeia (USP)/ European Pharmacopeia (EP) guidelines 4
• This medium contains gelatin peptone that provides amino acids and essential nutrients for bacterial growth
• Lactose is a carbon source for energy
• Oxgall is a selective agent which inhibits gram-positive organisms
• Lactose and bromcresol purple indicator enable the differentiation of lactose fermenting gram-negative bacilli
• Not all products are available for sale in all territories
• Please inquire
• Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.