Title :

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

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

Journal title :

Journal of Food Engineering

Pages :

110873

Publisher :

Elsevier

Publication date :

2022

ISSN :

0260-8774

English keyword(s) :

Droplet evaporation
Bacillus spores
Deposition patterns
Material
Hydrophobicity
Surface hygiene

HAL domain(s) :

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

English abstract : [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 ...
Show more >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.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

La Mécanique des Fluides au Service de la Sécurité Alimentaire

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL