Pastörize sütlerde Bacillus cereus'un varlığı

Bu çalışma, Ankara'da, haziran, temmuz ve ağustos aylarında satışa sunulan ve farklı 5 firmaya ait toplam 120 adet pastörize süt örneğinde B. cereus'un varlığı ve kontaminasyon düzeyinin belirlenmesi amacıyla yapılmıştır. Analiz bulguları çerçevesinde, toplam 120 adet pastörize süt örneğinin 56'sında (%46.6) B. cereus saptanmış olup, kontaminasyon düzeyi örneklerin 9'unda (%7.5) $10^3$ kob/ml, 28'inde (%23.3)$10^2$ kob/ml, 19'unda (%15.8) 10 kob/ml, 64'ünde (%53.3) ise saptama sınırının (

The presence of Bacillus cereus in pasteurized milk

This study was aim to determine the presence and contamination level of B. cereus in pasteurized milk, a total of 120 samples, belong to different 5 firms and saled in June, July, august in Ankara. As the frame of analysis, B. cereus was defined in 56 (46.6%) samples among the total of 120 pasteurized milk samples and those contamination level was found as, $10^3$ cfu/ml in 9 samples (7.5%) $10^2$ cfu/ml in 19 samples (15.8%), and in 64 samples (53.3%) was found under detection level (

PDF

___

ANON. 1998. Pastörize Süt Türk Standardları Enstitüsü. TS 1019/Şubat.
BAUMGART, J. 1997. Mikrobiologische Untersuchung von Lebensmitteln. Behr's Verlag. Hamburg.
CHRISTIANSSON, A., BERTILSSÖN, J., SVENSSON, B. 1999. Bacillus cereus spores in raw milk: factors affecting the contamination of milk during the grazing period. J. Dairy Sci. 82, (2): 305-314.
CRIELLY, E.M., LOGAN, N.A., ANDERTON, A.1994. Studies on the Bacillus flora of milk and milk products. J. Appl Bacteriol. 77, (3): 256-263.
GIFFEL, M.C., BEUMER, R.R. 1998. Isolation, identification and characterization of Bacillus cereus in the dairy industry.Tijdschr. Diergeneeskd. 123, (21): 628-632.
HELMY, Z.A., ABD-EL-BAKEY, A., MOHAMMED, E.I. 1984. Occurence of Bacillus cereus m milk and milk products in Egypt.Zentrabl. Mikrobiol. 1329, (2): 129-133.
KRAMER, J. 1997. Lebenstmittel-Mikrobiologie. Veriag Eugen Ulmer. Stuttgart.
LARSEN, H.D., JORGENSEN, K. 1997. The occurrence of Bacillus cereus'm Danish pasteurized milk. Int. J. Food Microbiol.34, (2): 179-186.
LIN, S., SCHRAFT, H., ODUMERU, J.A., GRIFFITHS, M. W. 1998. Identification of contamination sources of Bacillus cereus in pasteurized milk. Int. J. Food Microbiol. 43, (3): 159-171.
NETTEN, P., DE MOOSDIJK, A., HOENSEL, P., MOSSEL, DA, PERALES, I. 1990. Psychrotrophic strains of Bacillus cereus producing enterotoxin J. Appl. Bacteriol. 69 (1): 73-79.
ÖZALP, E., KAYMAZ, Ş. 1986. Süt Ürünleri ve Teknolojisi. Ankara Ünversitesi Veteriner Fakültesi. Teksir 86/11.
PICHHARDT, K. 1998. Lebensmittei-mikrobioiogie. Springer-Verlag Berlin Heidelberg.
SOGAARD, H., PETERSEN, E. 1997. The occurence of Bacillus cereus in dairy products. Nord Vet. Med. 29, (10): 429-435.
SUDI, 0.1996. Mikrobiologie der pasteurisierten Trinkmilch. 39-65. In: Weber, H. (Ed.) Mikrobiologie der Lebensmittel-Milch under Milchprodukte. Behr's Veriag. Hamburg.
WONG, H.C., CHANG, M.H., FAN, J. Y. 1998. Incidence and characterization of B. cereus isolates contaminating dairy products. Appl. Environ. Microbiol. 54, (3): 699-702.