Opornosc cieplna szczepow L.monocytogenes wyizolowanych z mleka

• Autorzy: Michalski M M , Rola J.G. , Kwiatek K.
• Języki publikacji: PL

Abstrakty

EN

Thermal resistance of L. monocytogenes strains that had been isolated from raw milk was determined in BHI broth. L. monocytogenes 1 were isolated from collected milk and L. monocytogenes 2 directly from a cow udder. Thtj strains at concentration of approximately lxl(r cell ml'1 were heated at 55°, 60° and 65°C for various periods of time. Decimal reduction times for L. monocytogenes 1 were D55 = 37.45 min, D60 = 2.63 min., Dć5 = 0.24 min. and for L. monocytogenes 2 the data were 9.73, 0.98 and 0.17 respectively. Z-values were 4.79 and 5.56° C, respectively. The reports that L. monocytogenes can survive pasteurization temperature have not been confirmed.

Słowa kluczowe

PL

higiena zywnosci; obrobka termiczna; Listeria monocytogenes; mleko; zanieczyszczenia bakteryjne; termoopornosc

• Wydawca: -
• Czasopismo: Medycyna Weterynaryjna
• Rocznik: 1994
• Tom: 50
• Numer: 06
• Opis fizyczny: s.254-256,tab.,bibliogr.

Twórcy

autor

Michalski M M

• Instytut Weterynarii, Al.Partyzantow 57, 24-100 Pulawy

autor

Rola J.G.

autor

Kwiatek K.

Bibliografia

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• 5. Farber J.M., Sanders G.W.. Speirs J.I., D’Aoust J.-Y.. Emmons D.B., McKellar R.: Int. J. Fd Microbiol. 7, 277, 1988.
• 6. Farber J.M.: Int. J. Fd Microbiol. 8, 285, 1989.
• 7. Farber J.M., Hughes A., Holley R., Brown B.: Acta Microbiol. Hung. 36, 273, 1989.