Quantitative assessment of the risk of microbial spoilage in foods. Prediction of non-stability at 55 °C caused by Geobacillus stearothermophilus in canned green beans

International Journal of Food Microbiology
Clémence RigauxF Carlin

Abstract

Microbial spoilage of canned foods by thermophilic and highly heat-resistant spore-forming bacteria, such as Geobacillus stearothermophilus, is a persistent problem in the food industry. An incubation test at 55 °C for 7 days, then validation of biological stability, is used as an indicator of compliance with good manufacturing practices. We propose a microbial risk assessment model predicting the percentage of non-stability due to G. stearothermophilus in canned green beans manufactured by a French company. The model accounts for initial microbial contaminations of fresh unprocessed green beans with G. stearothermophilus, cross-contaminations in the processing chain, inactivation processes and probability of survival and growth. The sterilization process is modeled by an equivalent heating time depending on sterilization value F₀ and on G. stearothermophilus resistance parameter z(T). Following the recommendations of international organizations, second order Monte-Carlo simulations are used, separately propagating uncertainty and variability on parameters. As a result of the model, the mean predicted non-stability rate is of 0.5%, with a 95% uncertainty interval of [0.1%; 1.2%], which is highly similar to data communicated by ...Continue Reading

References

Jun 17, 2000·International Journal of Food Microbiology·J C Augustin, V Carlier
Aug 12, 2000·International Journal of Food Microbiology·M H Zwieterin, S J van Gerwen
May 10, 2005·International Journal of Food Microbiology·Olivier CouvertIvan Leguérinel
Mar 2, 2006·Risk Analysis : an Official Publication of the Society for Risk Analysis·Amirhossein Mokhtari, H Christopher Frey
Jul 21, 2007·Risk Analysis : an Official Publication of the Society for Risk Analysis·Régis PouillotMarie Cornu
Mar 30, 2010·Risk Analysis : an Official Publication of the Society for Risk Analysis·Mariem EllouzeJean-Christophe Augustin
Aug 3, 2010·International Journal of Food Microbiology·Régis Pouillot, Marie Laure Delignette-Muller
Nov 5, 2010·International Journal of Food Microbiology·Sara A BurgessSteve H Flint
Mar 23, 2011·Risk Analysis : an Official Publication of the Society for Risk Analysis·Pieter BusschaertJan F Van Impe

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Citations

Mar 11, 2015·International Journal of Food Microbiology·Loïc DurandFabienne Remize
Dec 3, 2014·International Journal of Food Microbiology·Laure PujolJeanne-Marie Membré
Apr 9, 2015·Food Science and Technology International = Ciencia Y Tecnología De Los Alimentos Internacional·Isabel Gómez-JódarAlfredo Palop

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