In this study, 34 white cheeses and 16 civil (local name) cheeses purchased from markets and shops in Erzurum during the period of January 1995-April 1996 were analysed. The samples were streaked directly onto LSA and Palcam Agar media in Petri Plates and incubated at 37C° for 48 hours. After the incubation, the growing colonies on LSA-agar plates were examined by Henry's Modified IIIumination Method while collonies on Palcam agar were examined by naked eye. Typical colonies were selected and used for several biochemical tests. As a result, it was found that only one sample (2.94%) of the white cheeses examined was found to contain three Listeria spp. (2 L. monocytogenes and 1 L. innocua). On the other hand, only one sample (6.25%) of a total of 16 civil cheeses examined was found to contain one Listeria sp ( L. monocytogenes ). The results were discussed in light of the literature.

In this study, 34 white cheeses and 16 civil (local name) cheeses purchased from markets and shops in Erzurum during the period of January 1995-April 1996 were analysed. The samples were streaked directly onto LSA and Palcam Agar media in Petri Plates and incubated at 37C° for 48 hours. After the incubation, the growing colonies on LSA-agar plates were examined by Henry's Modified IIIumination Method while collonies on Palcam agar were examined by naked eye. Typical colonies were selected and used for several biochemical tests. As a result, it was found that only one sample (2.94%) of the white cheeses examined was found to contain three Listeria spp. (2 L. monocytogenes and 1 L. innocua). On the other hand, only one sample (6.25%) of a total of 16 civil cheeses examined was found to contain one Listeria sp ( L. monocytogenes ). The results were discussed in light of the literature.