Egg Yolk Enrichment

Difco™ Egg Yolk Enrichment 50% is a concentrated egg yolk emulsion recommended for use in a variety of media such as Difco™ SFP Agar Base and Difco™ McClung Toabe Agar Base for the isolation and identification of Clostridium species on the basis of their lecithinase activity.

…poisoning. Egg Yolk Agar Base, Modified is based on McClung and Toabe Agar Base (3) for isolation and detection of C. perfringens . In Egg Yolk Agar Base, Modified, CDC Anaerobe Agar is used as a base to prepare the medium. CDC Anaerobe Agar is a nonselective, highly enriched medium for the…

Used with Baird-Parker Agar Base for the isolation of S. aureus. The enrichment consists of 30% egg yolk suspension with 0.15% potassium tellurite., 6x100 ml.

BD supplies more than 400 different BD Difco™ and BD BBL™ brand media formulations and ingredients in dehydrated form for the convenience of the laboratorian and bioprocessing specialist.

Synonym(s): Mannitol Yolk Polymyxin B Description: Use with Egg Yolk Enrichment 50% and Antimicrobic Vial P for presumptive identification of B. cereus in foods

Difco™ Antimicrobic Vial K, containing kanamycin, is used to supplement SFP Agar Base containing Egg Yolk Enrichment 50% and Difco Antimicrobic Vial P for the detection and enumeration of Clostridium perfringens in foods. Used in the preparation of SFP Agar Base 25 mg Kanamycin per…

CRITERION™ Baird-Parker Agar Base is used with Egg Yolk Tellurite Enrichment as a selective medium for the detection and enumeration of coagulase-positive staphylococci from food samples. Egg Yolk Tellurite Emulsion, Cat. no. R450330, is required for this meduim.

…enhances growth of Staphylococcus . With the addition of egg yolk, the medium becomes yellow, opaque. The egg yolk additive, in addition to provide enrichment, aids in the identification process by demonstrating lecithinase activity (egg yolk reaction). A clear zone and grey-black colonies on this…

…enhances growth of Staphylococcus . With the addition of egg yolk, the medium becomes yellow, opaque. The egg yolk additive, in addition to provide enrichment, aids in the identification process by demonstrating lecithinase activity (egg yolk reaction). A clear zone and grey-black colonies on this…

…inhibit accompanying microflora and allow the growth of Listeria species. Soya lecithin has similar properties as that of egg yolk; hence additional supplementation of egg yolk emulsion is not required. After incubation at 30°C for 24-48 hours, approximately 0.1 ml of the broth is streaked on…

…addition of egg yolk (2.5% v/v) to PALCAM Agar has been reported to aid repair of damaged cells (2). Medium containing blood when overlaid on PALCAM Agar enables to differentiate and enumerate haemolytic Listeria species (3). Depending upon the type of sample used, selective enrichment broth…

…and enumeration of bacteria which are not particularly fastidious. Addition of different biological fluids such as horse or sheep blood, serum, egg yolk etc. makes it suitable for the cultivation of related fastidious organisms. Peptic digest of animal tissue, beef extract and yeast extract…

…and enumeration of bacteria which are not particularly fastidious. Addition of different biological fluids such as horse or sheep blood, serum, egg yolk etc. makes it suitable for the cultivation of related fastidious organisms. Peptic digest of animal tissue, beef extract and yeast extract…