Abstract
Acid and heat tolerance of 17 persistent and 23 nonpersistent Listeria monocytogenes strains, recovered from three meat-processing plants, were investigated. The isolates were genotyped by pulsed-field gel electrophoresis and categorized into persistent strains according to the frequency of the strain and duration of the contamination. The persistent and nonpersistent strains were challenged to acidic conditions (pH 2.4 for 2 h, 1 mol l(-1) HCl were used to acidify the suspension) and to heat (55 degrees C for 40 min) to receive a reduction in cell count. Listeria monocytogenes strains showed large variation in acid tolerance (over 6 log units) and in heat tolerance (3 log units). The persistent strains showed higher tolerance to acidic conditions than the nonpersistent strains (Student's t-test, P = 0.02), but significant differences in heat tolerance between persistent and nonpersistent strains were not observed. The results indicate that acid tolerance may have an effect on the persistence of L. monocytogenes contamination. This study highlights the fact that there are great differences in acid and heat tolerances between L. monocytogenes strains, and the preventive measures should be designed to be effective against the mos...Continue Reading
References
Apr 1, 1993·The Journal of Applied Bacteriology·S Sörqvist
May 1, 1996·Applied and Environmental Microbiology·B O'DriscollC Hill
Jun 20, 1998·Journal of Applied Microbiology·M A CasadeiJ E Gaze
Jan 5, 1999·Applied and Environmental Microbiology·T AutioH Korkeala
Apr 1, 1999·International Journal of Food Microbiology·M K MiettinenH J Korkeala
Apr 23, 1999·Journal of Applied Microbiology·D E Norwood, A Gilmour
Aug 5, 1999·Journal of Applied Microbiology·H GibsonJ T Holah
Mar 4, 2000·Cell Stress & Chaperones·T HanawaT Yamamoto
Jun 17, 2000·International Journal of Food Microbiology·G A Dykes, S M Moorhead
Sep 13, 2000·Journal of Food Protection·J M LundénH J Korkeala
Mar 17, 2001·Journal of Food Protection·M E DoyleV N Scott
Jul 16, 2002·Journal of Food Protection·Janne M LundénHannu J Korkeala
May 7, 2003·Applied and Environmental Microbiology·Adriana FerreiraKathryn J Boor
Nov 25, 2003·Journal of Food Protection·Janne M LundénHannu J Korkeala
Dec 1, 2006·Journal of Food Protection·Alexandra LianouJohn N Sofos
Citations
Nov 5, 2013·International Journal of Food Microbiology·Alexandra Lianou, Konstantinos P Koutsoumanis
Jan 6, 2012·Foodborne Pathogens and Disease·Daina L RingusKathryn J Boor
Jun 1, 2010·Applied and Environmental Microbiology·John P BowmanTom Ross
Feb 9, 2010·Applied and Environmental Microbiology·Ineke K H Van BoeijenTjakko Abee
Feb 1, 2011·International Journal of Food Microbiology·Brigitte Carpentier, Olivier Cerf
May 18, 2010·International Journal of Food Microbiology·Birte Fonnesbech VogelLone Gram
Jul 15, 2011·International Journal of Food Microbiology·Sara LomonacoMaria Teresa Bottero
Nov 7, 2017·MSphere·Anna PöntinenHannu Korkeala
Oct 27, 2015·Applied and Environmental Microbiology·Sagrario OrtizJoaquín V Martínez-Suárez
Feb 20, 2009·Journal of Applied Microbiology·V G Kastbjerg, L Gram
Jun 6, 2009·Journal of Food Science·L R LansdowneK E Matak
Jan 11, 2014·Journal of Food Protection·V FerreiraM J Stasiewicz
Mar 19, 2020·Foods·Rabia AyubMuhammad Inam Afzal
Jan 10, 2017·Biotechnology and Bioengineering·Eduardo XimenesMichael Ladisch
Dec 10, 2016·Frontiers in Microbiology·Kerrie NicAogáin, Conor P O'Byrne
Nov 29, 2015·Journal of Applied Microbiology·Solveig LangsrudEven Heir
Jul 21, 2009·Journal of Food Protection·Aivars BĕrziņsHannu Korkeala
Aug 30, 2018·Scientific Reports·Jule Anna HorlbogClaudia Guldimann
Nov 21, 2019·BMC Microbiology·Alexander J Taylor, Matthew J Stasiewicz
Jan 24, 2018·EFSA Journal·UNKNOWN EFSA Panel on Biological Hazards (BIOHAZ)Roland Lindqvist
Oct 19, 2019·Microorganisms·Jule Anna HorlbogClaudia Guldimann
Mar 1, 2014·Comprehensive Reviews in Food Science and Food Safety·Restituto TocmoHyun-Gyun Yuk
Jun 11, 2021·Scientific Reports·Jessica GrayEdward M Fox