Under the conditions of this study, it was found that the MRS
containing bile was selective for enumeration of L. acidophilus La5
from yoghurt, while RCA agar pH 5.3 and ST agar were effective for
enumeration of L. bulgaricus and S. thermophilus, respectively. For
the probiotic Prato cheese, the effective culture medium for
enumeration of L. acidophilus was the MRSS incubated at 45 C for