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FATE OF LISTERIA MONOCYTOGENES ON READY TO SERVE LETTUCE.

Author(s) : STEINBRUEGGE E. G., MAXCY R. B., LIEWEN M. B.

Type of article: Article

Summary

THE ABILITY OF LISTERIA MONOCYTOGENES TO SURVIVE AND GROW ON HEAD LETTUCE OBTAINED FROM A RETAIL OUTLET OVER A PERIOD OF 10 MONTHS WAS DETERMINED. LETTUCE WAS TORN INTO BITE SIZED PIECES, INOCULATED, PLACED INTO PLASTIC BAGS AND HELD AT 278, 285 AND 298 K (5, 12 AND 25 DEG C). AEROBIC PLATE COUNTS ON LETTUCE STORED AT 278 AND 285 K INCREASED GREATLY DURING THE 14 DAYS OF STORAGE. THE SAME GENERAL GROWTH PATTERNS WERE OBSERVED IN LETTUCE HELD AT 298 K. AEROBIC PLATECOUNTS INCREASED BY 1 OR 2 LOG CYCLES AND L. MONOCYTOGENES INCREASED BY 1 LOG CYCLE, EXCEPT FOR OCCASIONAL TRIALS WHERE THE ORGANISMS DID NOT GROW OR SURVIVE. LETTUCE JUICE HELD AT 278 K WAS ALSO ABLE TO SUPPORT GROWTH OF L. MONOCYTOGENES.

Details

  • Original title: FATE OF LISTERIA MONOCYTOGENES ON READY TO SERVE LETTUCE.
  • Record ID : 1989-1397
  • Languages: English
  • Source: Journal of Food Protection - vol. 51 - n. 8
  • Publication date: 1988
  • Document available for consultation in the library of the IIR headquarters only.

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