For isolation of Clostridium difficile.
Clostridium Difficile Agar is a formula recommended by George et al. for isolation of C. difficile. The medium contains fructose which enhances the recovery and growth of C. difficile. The addition of the antibiotics, cefoxitin and cycloserine, inhibit the growth of Enterobacteriaceae, Enterococcus faecalis, staphylococci, Gram negative non-sporulating anaerobic bacilli, and Clostridia sp. but not C. difficile. Supplementing the medium with horse blood and egg yolk further improves the recovery of C. difficile.
Storage:
Store the sealed bottle containing the dehydrated medium at 2 to 8.0 degrees C. Once opened and recapped, place the container in a low humidity environment at the same storage temperature. Protect it from moisture and light. The dehydrated medium should be discarded if it is not free flowing or if the color has changed from the original light beige color.