Mechanistic model coupling gas exchange dynamics and Listeria monocytogenes growth in modified atmosphere packaging of non respiring food

A mechanistic model coupling O2 and CO2 mass transfer (namely diffusion and solubilisation in the food itself and permeation through the packaging material) to microbial growth models was developed aiming at predicting the shelf life of modified atmosphere packaging (MAP) systems. It was experimenta...

Full description

Saved in:
Bibliographic Details
Published in:Food microbiology 2015-10, Vol.51, p.192-205
Main Authors: Chaix, E., Broyart, B., Couvert, O., Guillaume, C., Gontard, N., Guillard, V.
Format: Article
Language:English
Subjects:
Atmosphere
Carbon Dioxide
Food Microbiology
Food Packaging
Food Preservation - methods
Food Preservation - statistics & numerical data
Gas transfer
Gases
Life Sciences
Listeria monocytogenes
Listeria monocytogenes - growth & development
Listeria monocytogenes - physiology
Mathematical modelling
Models, Theoretical
Modified atmosphere packaging
Nitrogen
Oxygen
Predictive microbiology
Reproducibility of Results
Vacuum
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A mechanistic model coupling O2 and CO2 mass transfer (namely diffusion and solubilisation in the food itself and permeation through the packaging material) to microbial growth models was developed aiming at predicting the shelf life of modified atmosphere packaging (MAP) systems. It was experimentally validated on a non-respiring food by investigating concomitantly the O2/CO2 partial pressure in packaging headspace and the growth of Listeria monocytogenes (average microbial count) within the food sample. A sensitivity analysis has revealed that the reliability of the prediction by this “super-parametrized” model (no less than 47 parameters were required for running one simulation) was strongly dependent on the accuracy of the microbial input parameters. Once validated, this model was used to decipher the role of O2/CO2 mass transfer on microbial growth and as a MAP design tool: an example of MAP dimensioning was provided in this paper as a proof of concept. •We model the dynamic of gas exchange in the food/packaging system.•We decipher the role of gas transfer on Listeria monocytogenes growth.•Increasing precision on microbial parameters will increase model accuracy.•Our model can be used as Decision Support System for packaging dimensioning.•O2/CO2 transfer could not be neglected when permeable packaging are used.
ISSN:0740-0020
1095-9998
DOI:10.1016/j.fm.2015.05.017