background preloader

Modélisation et Listéria

Facebook Twitter

AFSCA 04/04/17 Tests de provocation (challenge tests) et tests de vieillissement dans les denrées alimentaires en ce qui concerne Listeria monocytogenes. Contrôle de la qualité des eaux dans le secteur des denrées alimentaires - Annexe 1 : Paramètres et valeurs paramétriques - Annexe 2 : Paramètres à analyser selon les traitements appliqués à l’eau de distribution.

AFSCA 04/04/17 Tests de provocation (challenge tests) et tests de vieillissement dans les denrées alimentaires en ce qui concerne Listeria monocytogenes

Procedia Food Science Volume 7, 2016, Modelling the fate of Listeria Monocytogenes in Beef Meat Stored at Refrigeration Temperatures under Different Packaging Conditions. INTERNATIONAL CONGRESS ON ENGINEERING AND FOOD (Athens - Greece) - MAI 2011 - Au sommaire: MFS882 Modeling the effect of acid and osmotic shifts above and across the growth boundaries on the adaptation and growth of Listeria monocytogenes. Veterinary Microbiology Volume 179, Issues 1–2, 31 August 2015, Pages 76–81 A new bovine conjunctiva model shows that Listeria monocytogenes invasion is associated with lysozyme resistance. Open Access Highlights We present the first bovine conjunctiva explant model for infection studies.

Veterinary Microbiology Volume 179, Issues 1–2, 31 August 2015, Pages 76–81 A new bovine conjunctiva model shows that Listeria monocytogenes invasion is associated with lysozyme resistance

Listeria monocytogenes was isolated from a healthy bovine eye. 2 L. monocytogenes isolates were markedly less able to invade conjunctiva explants. Those isolates were also significantly more sensitive to lysozyme. Abstract Listerial keratoconjunctivitis (‘silage eye’) is a wide spread problem in ruminants causing economic losses to farmers and impacts negatively on animal welfare. Keywords Listeria monocytogenes; Silage eye; Keratoconjunctivitis; Ex vivo organ culture; Lysozyme resistance 1. Listeria monocytogenes is an intracellular pathogen which has been extensively studied as a cause of human food borne infections associated with a high mortality rate ( McLauchlin et al., 2014). 2. 2.1. L. monocytogenes strains used in this study are listed in Table 1. Table 1. Listeria monocytogenes isolates used in this study. APHA, Animal and Plant Health Agency. Full-size table 2.2. 2.3. 2.4. 2.5. 2.6. 2.7.

Références : International Journal of Food Microbiology

JIFSAN RESEARCH GRANT SYMPOSIUM - 2004 - Présentation : Modeling the Antimicrobial Effect of Lactate on the Growth and Survival of Listeria monocytogenes on Ready-to-Eat Seafood. National Food Institute (DTU Food), Technical University of Denmark - 2011 - Microbial challenge tests and predictive modelling software for evaluating and improving food safety – A case study with Listeria monocytogenes and ready-to-eat foods. JOURNAL OF FOOD SCIENCE - 2004 - Mathematical Frameworks for Modeling Listeria Cross-contamination in Food-processing Plants. Appl Environ Microbiol. 2013 Oct; 79(19): Combining Individual-Based Modeling and Food Microenvironment Descriptions To Predict the Growth of Listeria monocytogenes on Smear Soft Cheese. TECHNICAL UNIVERSITY OF DENMARK 02/02/15 Predicting the shelf-life of cottage cheese. New mathematical models that predict the growth of listeria and lactic acid bacteria in different types of cottage cheese can be used by producers to determine the shelf-life of their products.

TECHNICAL UNIVERSITY OF DENMARK 02/02/15 Predicting the shelf-life of cottage cheese

The models have been developed in a PhD project at the National Food Institute, Technical University of Denmark. The project results can also be used as a starting point for developing predictive models for microorganisms in other fermented products. Disease-causing listeria bacteria may be present in food. If the bacteria are present in large numbers in products that are not heat-treated before consumption, they can lead to the serious disease listeriosis. Although cottage cheese has not been linked to outbreaks or cases of listeriosis, cottage cheese producers must be able to document that their products comply with microbiological criteria for listeria bacteria. New models developed Potential for development of further models Read more. Front Cell Infect Microbiol. 2014; 4: 90. Modeling the growth of Listeria monocytogenes on the surface of smear- or mold-ripened cheese.

Food Microbiology 30 (2012) 267e273 Modeling the growth rate and lag time of different strains of Salmonella enterica and Listeria monocytogenes in ready-to-eat lettuce. PARISTECH - JANVIER 2013 – Thèse en ligne : Modélisation de la contamination par Listeria monocytogenes pour l'amélioration de la surveillance dans les industries agro-alimentaires. ANSES - HIVER 2013 - Modélisation de la contamination par Listeria monocytogenes pour l’amélioration de la surveillance dans les industries agro-alimentaires. EURL LM - 2014 - EURL Lm Technical Guidance Document for conducting shelf-life studies on Listeria monocytogenes in ready-to-eat foods. Journal of Food Science and Engineering 2 (2012) Comparison of Primary Models and Development of Predictive Model for Growth of. APPLIED AND ENVIRONMENTAL MICROBIOLOGY 14/09/12 Modelling the growth of Listeria monocytogenes in soft blue white cheese.

+ Author Affiliations The aim of this study was to develop a predictive model simulating growth over time of the pathogenic bacterium L. monocytogenes in a soft blue white cheese.

APPLIED AND ENVIRONMENTAL MICROBIOLOGY 14/09/12 Modelling the growth of Listeria monocytogenes in soft blue white cheese

The physicochemical properties in a matrix such as cheese are essential controlling factors influencing the growth of L. monocytogenes. We developed a predictive tertiary model of the bacterial growth of L. monocytogenes as function of temperature, pH, NaCl, and lactic acid. We measured the variations over time of the physico-chemical properties in the cheese. Our predictive model was developed based on broth data produced in previous studies. . ↵1Corresponding author, Microbial Food Safety and Hygiene, Department of Veterinary Disease Biology University of Copenhagen, Stigboejlen 4, Frederiksberg C DK-1870, Denmark. Copyright © 2012, American Society for Microbiology. SYMPREVIUS - Au sommaire: Participation de Sym'Previus aux colloques et congrès scientifiques. FRANCE AGRIMER - Acte des 11èmes journées "sciences du muscle et technologie des viandes" - 2006 Modélisation du comportement de.

Titre du document / Document title Auteur(s) / Author(s) Affiliation(s) du ou des auteurs / Author(s) Affiliation(s) (1) ADIV, 2 rue Chappe, 63039 Clermont Ferrand, FRANCE(2) ADRIA Développement, ZA de Creac'h Gwen, 29196 Quimper, FRANCE Revue / Journal Title Source / Source CongrèsJournées « Sciences du muscle et technologies des viandes » No11, Clermont-Ferrand , FRANCE (04/10/2006) 2006, HS (262 p.)

FRANCE AGRIMER - Acte des 11èmes journées "sciences du muscle et technologie des viandes" - 2006 Modélisation du comportement de

FOODBORNE PATHOGENS AND DISEASE Volume 8, Number 1, 2011 Comparison of Probabilistic and Deterministic Predictions of Time to Gr. BLOG D ALBERT AMGAR 02/11/14 Explications fournies par l’AFSCA sur les challenge tests et les tests de vieillissement dans les denrées alimentaires concernant Listeria monocytogenes.