How to examine lecithinase activity of Enterococcus spp. on egg yolk agar ?

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Jai Ghosh

Do the copper soap test on the plate of egg yolk agar after the growth of the bacteria.

Yehia A.-G. Mahmoud

A positive lecithinase test is noted by the appearance of a white, opaque, diffuse zone that extends into the medium surrounding the colonies.

A negative lecithinase test is indicated by the absence of a white, opaque zone extending from the edge of the colony.

https://catalog.hardydiagnostics.com/cp_prod/Content/hugo/EggYolkAgarModified.html

Aalaa Samir Saad

how can i do copper soap test on the plate of egg yolk agar?