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BEHAVIOUR OF LISTERIA MONOCYTOGENES IN MINCED MEAT DURING CHILLED AND FROZEN STORAGE.

[In German. / En allemand.]

Author(s) : KAYA M., SCHMIDT U.

Type of article: Article

Summary

IN MINCED MEAT NATURALLY CONTAMINATED WITH LISTERIAE (100/GRAMME) WITH A LOW GENERAL LEVEL OF BACTERIAL CONTAMINATION (100,000/GRAMME) THERE IS NO GROWTH OF LISTERIA MONOCYTOGENES OVER A PERIOD OF 14 DAYS AT 277 AND 281 K (4 AND 8 DEG C). AT 285 K (12 DEG C) GROWTH OCCURS AFTER 7 DAYS AND AT 293 K (20 DEG C) AFTER 1 DAY. MINCED MEAT EXPERIMENTALLY CONTAMINATED WITH LISTERIAE (100,000/GRAMME) AND WITH A LOW GENERAL LEVEL OF BACTERIAL CONTAMINATION PRODUCED A GROWTH OF L. MONOCYTOGENES ON THE VERY FIRST DAY AT 285 TO 298 K (25 DEG C), AND FROM THE 5TH DAY AT 280 K (7 DEG C) AND 281 K. WITH A HIGHER CONTAMINATION (10,000,000/GRAMME), WHICH CONTAINED 100 AND 100,000 LISTERIA/GRAMME, NO GROWTH OF LISTERIAE WAS OBSERVED AT TEMPERATURES OF 281 TO 298 K. THE GROWTH OF L. MONOCYTOGENES AT 281 TO 293 K COULD BE SUPPRESSED FOR 14 DAYS BY ADDING LACTOBACILLI (1,000,000/GRAMME). FROZEN STORAGE OF MINCED MEAT EXPERIMENTALLY CONTAMINATED (100,000/GRAMME) OVER A PERIOD OF 6 MONTHS AT 255 K (-18 DEG C).

Details

  • Original title: [In German. / En allemand.]
  • Record ID : 1990-0186
  • Languages: German
  • Source: Fleischwirtschaft - vol. 69 - n. 4
  • Publication date: 1989/04
  • Document available for consultation in the library of the IIR headquarters only.

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