Titre :

Structure of deposits formed by drying of droplets contaminated with Bacillus spores determines their resistance to rinsing and cleaning

Auteur(s) :

Deleplace, Maureen [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Dallagi, Heni [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Dubois, Thomas [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Richard, Elodie [Auteur]
Plateformes Lilloises en Biologie et Santé - UAR 2014 - US 41 [PLBS]
Ipatova, Anna [Auteur]
Acoustique Impulsionnelle & Magnéto-Acoustique Non linéaire - Fluides, Interfaces Liquides & Micro-Systèmes - IEMN [AIMAN-FILMS - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Benezech, Thierry [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Faille, Christine [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207

Titre de la revue :

Journal of Food Engineering

Numéro :

318

Éditeur :

Elsevier

Date de publication :

2022

ISSN :

0260-8774

Mot(s)-clé(s) en anglais :

Droplet evaporation
Bacillus spores
Deposition patterns
Material
Hydrophobicity
Surface hygiene

Discipline(s) HAL :

Sciences du Vivant [q-bio]/Ingénierie des aliments
Sciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des fluides [physics.class-ph]

Résumé en anglais : [en]

The formation of deposits by evaporation of droplets contaminated by Bacillus spores was investigated, focusing on the role of spore and material properties. Droplets containing hydrophilic to hydrophobic spores were ...
Lire la suite >The formation of deposits by evaporation of droplets contaminated by Bacillus spores was investigated, focusing on the role of spore and material properties. Droplets containing hydrophilic to hydrophobic spores were deposited on materials (stainless steels, polypropylene, glass). The presence of spores within the droplets, as well as material hydrophobicity plays a major role in the kinetics of the droplet shape during drying while the pattern of the dried deposit was affected by both material and spore properties. The resistance to detachment of the different deposits was then investigated. After a single rinsing procedure, a very high resistance to detachment of adherent spores was observed (up to 90% of residual spores). The hydrophilic Bs PY79 spores were the least resistant to removal, while the differences between materials were not pronounced. The ease of cleaning of the dried deposits was much greater. The least resistant spores were still the Bs PY79 ones, while the detachment was 3–100 times more effective on glass than on other materials.These results highlight the predominant role of hydrophilic/hydrophobic properties of particles and materials on the structure of deposits and their further resistance to rinsing and cleaning procedures.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Non spécifiée

Vulgarisation :

Non

Projet ANR :

La Mécanique des Fluides au Service de la Sécurité Alimentaire

Établissement(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Processus aux Interfaces et Hygiène des Matériaux (PIHM)

Date de dépôt :

2022-12-01T08:39:39Z