Thermo Scientific™ Phenol Red Dextrose Broth (Dehydrated)

Description

• Determine dextrose fermentation by a variety of microorganisms with Thermo Scientific™ Remel™ Phenol Red Dextrose Broth (Dehydrated)
• Vera recommended using casein peptone in fermentation test media because of its high growth-promoting qualities 1
• It was reported that peptone could be used with phenol red as the pH indicator in fermentation tests
• Phenol Red Dextrose Broth is a complete medium prepared with phenol red as an indicator which changes the medium to yellow color when acid is produced
• Phenol Red Broth without carbohydrate is used as a negative control for fermentation studies
• Can be used in fermentation studies of pure cultures of many species of bacteria due to high growth promoting qualities of casein peptone
• Recommended by Association of Official Analytical Collaboration (AOAC) International and the American Public Health Association (APHA) 2-4
• Easy to interpret because of dextrose fermentation reaction and gas production
• The medium is yellow when there is acid production and there is no color change when there is no fermentation
• Bubbles are present in the Durham tube when gas is produced
• Phenol Red Dextrose Broth contains casein peptone that has high growth-promoting qualities
• Phenol red is the indicator which helps to determine the reaction by color change
• This medium also contains sodium chloride and dextrose
• Sodium chloride supplies essential electrolytes and maintains osmotic equilibrium of the medium
• Dextrose is the source of fermentable carbohydrate
• Not all products are available for sale in all territories
• Please inquire
• Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.