Titre :

Structure and resistance to mechanical stress and enzymatic cleaning of Pseudomonas fluorescens biofilms formed in fresh-cut ready to eat washing tanks.

Auteur(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]

Titre de la revue :

Journal of Food Engineering

Nom court de la revue :

Journal of Food Engineering

Numéro :

262

Pagination :

154-161

Éditeur :

Elsevier BV

Date de publication :

2019-12

ISSN :

0260-8774

Mot(s)-clé(s) en anglais :

Biofilm structure
Mechanical detachment
Enzymatic cleaning
Equipment design
Pseudomonas fluorescens
Wetting front

Discipline(s) HAL :

Sciences du Vivant [q-bio]/Ingénierie des aliments

Résumé en anglais : [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' ...
Lire la suite >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.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Processus aux Interfaces et Hygiène des Matériaux (PIHM)

Date de dépôt :

2020-12-14T14:50:02Z