Some virulence properties and characterization of motile Aeromonas species from milk and white cheese
    
Yazarlar (3)
Nihal Yücel
Gazi Üniversitesi, Türkiye
Prof. Dr. Belgin ERDEM Gazi Üniversitesi, Türkiye
Dilek Kaya
Gazi Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı International Journal of Dairy Technology
Dergi ISSN 1364-727X Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 05-2005
Cilt / Sayı / Sayfa 58 / 2 / 106–110 DOI 10.1111/j.1471-0307.2005.00191.x
Makale Linki http://doi.wiley.com/10.1111/j.1471-0307.2005.00191.x
Özet
Three hundred and thirty-eight samples of milk and milk products in Ankara were screened for the presence of motile Aeromonas species. The overall frequency of aeromonads in these samples was 27%. As expected, raw milk samples were more contaminated with aeromonads than were other products. Sixty-five (49.2%) of the 132 bulk raw milk samples were contaminated with aeromonads. In 35 of these samples, populations of aeromonads from 1.5 × 102 to 3.0 × 103 cfu/mL were counted in ampicillin dextrin agar (ADA). Ten (40%) of the 25 raw milk samples sold in the street were contaminated with aeromonads. In eight of these samples, 1.2 × 102-3.0 × 103 cfu/mL were counted. Five (16%) of the 31 pasteurized milk and 12 (8%) of the 150 white cheese samples were contaminated with Aeromonas spp., but no countable aeromonads population was noted in ADA. The incidence of A. hydrophila, A. sobria and A. caviae in all samples was found to be 90.2%, 4.3% and 5.4%, respectively. The majority of the strains identified as A. hydrophila and A. sobria were able to produce haemolysin, protease and DNase, while strains identified as A. caviae were only positive for DNase. All isolated Aeromonas species (A. hydrophila, A. sobria and A. caviae) were positive for uptake of Congo red dye. Nevertheless, only strains identified as A. hydrophila and A. sobria showed a high rate of positive results when tested for the production of the Voges-Proskauer reaction and lysine decarboxylase. The results of this work show that motile Aeromonas spp., especially A. hydrophila, are frequently found in these samples. As these products are usually commonly consumed in Ankara, they can pose a risk especially for children, the elderly and immunocompromised individuals. © 2005 Society of Dairy Technology.
Anahtar Kelimeler
Characterization | Motile Aeromonas spp. | Virulence factors