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Journal of Food Quality
Volume 2018, Article ID 9141540, 6 pages
Research Article

Effect of Temperature and Gamma Radiation on Salmonella Hadar Biofilm Production on Different Food Contact Surfaces

1Laboratoire de Biotechnologie et Techniques Nucléaires, Centre National des Sciences et Technologies Nucléaires, TechnoPole de Sidi Thabet, Sidi Thabet, Tunisia
2Laboratoire de Traitement et Valorisation des Rejets Hydriques, Centre des Recherches et des Technologies des Eaux (CERTE), Université de Carthage, Technopole Borj Cédria, BP 273, 8020 Soliman, Tunisia
3Laboratoire de Biochimie et de Biologie Moléculaire, Faculté des Sciences de Bizerte, Zarzouna, Tunisia
4CNRS, INRA, UMR 8207-UMET-PIHM, Université de Lille1, 369 rue Jules Guesde, CS 20039, 59651 Villeneuve d’Ascq, France

Correspondence should be addressed to Najla Ben Miloud Yahia; rf.oohay@duolimnebaljan

Received 11 December 2017; Accepted 20 February 2018; Published 28 March 2018

Academic Editor: Tomislava Vukušić

Copyright © 2018 Najla Ben Miloud Yahia et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Salmonella is a pathogen transmitted by foods and it is one of the most important target bacteria in food irradiation studies. Few works were carried out on the effectiveness of gamma radiation against biofilms formed by this bacterium. Salmonella can form a biofilm on different material surfaces. The physicochemical properties of surfaces and environmental factors influence the adhesion of this pathogen. The present study investigated the effect of gamma radiation (1 and 2 kGy) and temperature (28°C and 37°C) on the development of Salmonella Hadar biofilm on polyvinyl chloride (PVC), glass, cellophane paper (CELLO), and polystyrene (POLY). The obtained results indicated that biofilm production is surface and temperature dependent. In addition, biofilm formation decreased significantly after gamma irradiation at either 1 or 2 kGy doses. However, the agfD and adrA genes expression did not demonstrate significant decrease. This work highlighted that gamma radiation treatment could reduce the biofilm formation of Salmonella enterica serovar Hadar on different food contact surfaces.