Structure and resistance to mechanical ...
Document type :
Article dans une revue scientifique: Article original
Permalink :
Title :
Structure and resistance to mechanical stress and enzymatic cleaning of Pseudomonas fluorescens biofilms formed in fresh-cut ready to eat washing tanks.
Author(s) :
Cunault, Charles [Auteur]
Faille, Christine [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Calabozo-Delgado, Almudena [Auteur]
Benezech, Thierry [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Faille, Christine [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Calabozo-Delgado, Almudena [Auteur]
Benezech, Thierry [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Journal title :
Journal of Food Engineering
Abbreviated title :
Journal of Food Engineering
Volume number :
262
Pages :
154-161
Publisher :
Elsevier BV
Publication date :
2019-12
ISSN :
0260-8774
English keyword(s) :
Biofilm structure
Mechanical detachment
Enzymatic cleaning
Equipment design
Pseudomonas fluorescens
Wetting front
Mechanical detachment
Enzymatic cleaning
Equipment design
Pseudomonas fluorescens
Wetting front
HAL domain(s) :
Sciences du Vivant [q-bio]/Ingénierie des aliments
English abstract : [en]
Surface contamination by Pseudomonas fluorescens biofilms was studied using pilot scale washing tanks with standard design features encountered in the fresh-cut vegetable processing industry. Consequences on the biofilms' ...
Show more >Surface contamination by Pseudomonas fluorescens biofilms was studied using pilot scale washing tanks with standard design features encountered in the fresh-cut vegetable processing industry. Consequences on the biofilms' resistance to the shear stress and to enzymatic cleaning were analysed. It was found that biofilm structures depended on the location in the tanks, which could range from discontinuous monolayer to large thick clusters, as observed for the wetting front areas corresponding to intermittently immersed areas. Biofilms grown in zones subjected to shear and at the wetting front were significantly more resistant to mechanical stress. Therefore, poor design features such as horizontal surfaces, right angles, welds and corners at the vat bottom appeared critical in terms of hygiene, being more resistant to enzymatic cleaning. Biofilms developed at the wetting front, in a priori hygienic areas, also appear resistant to enzymatic cleaning, constituting additional critical areas.Show less >
Show more >Surface contamination by Pseudomonas fluorescens biofilms was studied using pilot scale washing tanks with standard design features encountered in the fresh-cut vegetable processing industry. Consequences on the biofilms' resistance to the shear stress and to enzymatic cleaning were analysed. It was found that biofilm structures depended on the location in the tanks, which could range from discontinuous monolayer to large thick clusters, as observed for the wetting front areas corresponding to intermittently immersed areas. Biofilms grown in zones subjected to shear and at the wetting front were significantly more resistant to mechanical stress. Therefore, poor design features such as horizontal surfaces, right angles, welds and corners at the vat bottom appeared critical in terms of hygiene, being more resistant to enzymatic cleaning. Biofilms developed at the wetting front, in a priori hygienic areas, also appear resistant to enzymatic cleaning, constituting additional critical areas.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
INRA
ENSCL
CNRS
INRA
ENSCL
Collections :
Research team(s) :
Processus aux Interfaces et Hygiène des Matériaux (PIHM)
Submission date :
2020-12-14T14:50:02Z