Enumeration of L. monocytogenes and S. aureus
For enumeration of L. monocytogenes an aliquot of 100 μl of each of
the 10-fold dilutions was spread plated on Oxoid chromogenic Listeria
agar (OCLA) (Oxoid, code CM1084B) supplementedwithOCLA selective
supplement (Oxoid code SR0226E) and Brilliance Listeria differential
supplement (Oxoid code SR0228E) and incubated at 37 °C for 48 h.