Egg Yolk Emulsion (20 %)

ISO 7932, sterile, stabilised, for microbiology
Media supplement for preparation of egg yolk agar for detection of microbial lecithinase activity.
100 ml Egg Yolk Emulsion are sufficient for 1 l agar medium.

Egg Yolk Emulsion (20 %)
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Storage temp.: +4 °C
Transport temp.: room temp.

Egg Yolk Emulsion is used as supplement in nutrient agars for detection of lecithinase activity in microbial colonies. Herewith, bacterial species like Bacillus cereus and Clostridium perfringens, or Staphylococcus aureus may be identified. The lecithinase activity can be noted by formation of light, sometimes whitish halos surrounding the colonies.

Application: The ISO 7932 recommends a final concentration of 10 % emulsion in the prepared medium in general, e.g. in Mannitol Egg Yolk Polymyxin Agar (Base) (Art. No. 5765.1) for examining the lecithinase activity of Bacillus cereus.

We recommend using TSC Agar (Base) (Art. No. CL51.1), Mannitol Salt Agar (Art. No. CL81.1) or Palcam Listeria Agar (Base) (Art. No. 5768.1) for base agar with the addition of 5 % emulsion.

Add after autoclaving.


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Egg Yolk Emulsion (20 %)

Status Art. No. Pack Qty. Packaging Price Quantity Action
Item available in stock 0402.1 100 ml glass €44.00 €34.25
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Technical information

Guarantee analysis:
Colouryellow
Egg yolk20 %
Sterilitycomplies

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