Isolation and identification of Listeria monocytogenes from white pickled cheese consumed in Niğde Region

Bu araştırma, Niğde ve yöresinde tüketime sunulan salamura beyaz peynirlerden Listeria monocytogenes' in izo­lasyonu ve tanımlanması amacıyla yapıldı. Araştırmada Niğde ve yöresinde Haziran-Temmuz-2005 tarihleri arasında top­lanan 50 adet salamura beyaz peynir numunesi incelendi. İzolasyon çalışmalarında zenginleştirme besi yeri olarak Listeria Enrichment Broth Base (Oxoid, CM862), selektif besi yeri olarak Listeria Selective Agar Base (Oxoid, CM856) kullanıldı. Yapılan incelemeler sonucunda, 50 adet salamura beyaz peynir örneğinden, 3 tanesinde (%6) L.monocytogenes, 8 ta­nesinde (%16) L.ınnocua ve 2 tanesinde (%4) Lwelshimeri izole ve identifıye edildi. Sonuçta; salamura beyaz peynirlerde Lmonocytogenes'ln tesbit edilmesi ve minimum enfekte edici dozun bilinememesi nedeniyle, halk sağlığı açısından, po­tansiyel bir tehlike oluşturabileceği kanaatine varıldı.This investigation was carried out to isolate and identify the Lmonocytogenes from white pickled che­ese consumed in Niğde region. In this study, between June-2005, July-2005 50 samples of pickled white cheese were exa­mined in Niğde region. In isolation studies, Listeria Enrichment Broth Base (Oxoid, CM862) was used as enrichment broth and Listeria Selective Agar Base (Oxoid, CM856) was used to isolate the agent. Of 50 white pickled cheese samples, stra­ins of L.monocytogenes in 3 samples (6 %), L.innocula in 8 samples (16 %) and L.welshimeri n 2 samples (4 %) were iso­lated and identified. In conclusion, although what number of the bacteria through this route could infect the human is not known it is considered that there is a potential of transmission risk on the Public Health Issues, since L.monocytogenes was identified in white pickled cheese consumed in Niğde and its province