Investigation on the Isolation and Identification of the Listeria Species in the White and Civil Cheeses Purchased From Erzurum Region

Authors : A Aydan KARA

Pages : 331-338

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Publication Date : 1999-12-01

Article Type : Research Paper

Abstract :In this study, 34 white cheeses and 16 civil insert ignore into journalissuearticles values(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 insert ignore into journalissuearticles values(2.94%); of the white cheeses examined was found to contain three Listeria spp. insert ignore into journalissuearticles values(2 L. monocytogenes and 1 L. innocua);. On the other hand, only one sample insert ignore into journalissuearticles values(6.25%); of a total of 16 civil cheeses examined was found to contain one Listeria sp insert ignore into journalissuearticles values( L. monocytogenes );. The results were discussed in light of the literature.
Keywords : Listeria, Cheese, Isolation