Document Detail

Survival of Listeria monocytogenes on a conveyor belt material with or without antimicrobial additives.
MedLine Citation:
PMID:  20655607     Owner:  NLM     Status:  MEDLINE    
Survival of Listeria monocytogenes on a conveyor belt material with or without antimicrobial additives, in the absence or presence of food debris from meat, fish and vegetables and at temperatures of 10, 25 and 37 degrees C was investigated. The pathogen survived best at 10 degrees C, and better at 25 degrees C than at 37 degrees C on both conveyor belt materials. The reduction in the numbers of the pathogen on belt material with antimicrobial additives in the first 6h at 10 degrees C was 0.6 log unit, which was significantly higher (P<0.05) than the reduction of 0.2 log unit on belt material without additives. Reductions were significantly less (P<0.05) in the presence of food residue. At 37 degrees C and 20% relative humidity, large decreases in the numbers of the pathogen on both conveyor belt materials during the first 6h were observed. Under these conditions, there was no obvious effect of the antimicrobial substances. However, at 25 degrees C and 10 degrees C and high humidity (60-75% rh), a rapid decrease in bacterial numbers on the belt material with antimicrobial substances was observed. Apparently the reduction in numbers of L. monocytogenes on belt material with antimicrobial additives was greater than on belt material without additives only when the surfaces were wet. Moreover, the presence of food debris neutralized the effect of the antimicrobials. The results suggest that the antimicrobial additives in conveyor belt material could help to reduce numbers of microorganisms on belts at low temperatures when food residues are absent and belts are not rapidly dried.
N Chaitiemwong; W C Hazeleger; R R Beumer
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2010-06-30
Journal Detail:
Title:  International journal of food microbiology     Volume:  142     ISSN:  1879-3460     ISO Abbreviation:  Int. J. Food Microbiol.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-10     Completed Date:  2010-11-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8412849     Medline TA:  Int J Food Microbiol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  260-3     Citation Subset:  IM    
Copyright Information:
Copyright 2010 Elsevier B.V. All rights reserved.
Laboratory of Food Microbiology, Wageningen University, Wageningen, The Netherlands.
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MeSH Terms
Anti-Bacterial Agents / pharmacology*
Bacterial Adhesion / drug effects
Food Contamination / analysis,  economics
Food-Processing Industry / instrumentation*
Listeria monocytogenes / drug effects,  growth & development*,  physiology
Meat / microbiology
Microbial Viability* / drug effects
Reg. No./Substance:
0/Anti-Bacterial Agents

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