Title :

Influence of stainless steel surface properties on whey protein fouling under industrial processing conditions

Author(s) :

Zouaghi, Sawsen [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Six, Thierry [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Nuns, Nicolas [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Simon, Pardis [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Bellayer, Séverine [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Moradi, Sona [Auteur]
University of Northern British Columbia [Prince George] [UNBC]
Hatzikiriakos, Savvas G. [Auteur]
University of Northern British Columbia [Prince George] [UNBC]
Andre, Christophe [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Delaplace, Guillaume [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Jimenez, Maude [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207

Journal title :

Journal of Food Engineering

Volume number :

228

Pages :

38-49

Publication date :

2018

English keyword(s) :

Dairy processing
Antifouling
Surface free energy
Roughness
Whey protein

HAL domain(s) :

Sciences du Vivant [q-bio]/Biochimie, Biologie Moléculaire
Sciences de l'ingénieur [physics]/Matériaux
Sciences de l'ingénieur [physics]/Génie des procédés
Chimie/Matériaux
Sciences du Vivant [q-bio]/Ingénierie des aliments
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
Chimie/Polymères

English abstract : [en]

Heat-induced fouling is a financial and environmental burden for food and dairy industries and its control is therefore desperately needed. A better understanding of the fouling mechanisms and their relation to stainless ...
Show more >Heat-induced fouling is a financial and environmental burden for food and dairy industries and its control is therefore desperately needed. A better understanding of the fouling mechanisms and their relation to stainless steel surface properties is thus of considerable interest. This work aims at studying the impact of stainless steel's surface morphology and surface free energy on fouling by a model dairy solution by a close examination of the deposit's growth and adhesion at the substrate-fluid interface. Pristine model surfaces of controlled roughness and surface energy, i.e. native, mirror polished and biomimetic femtosecond laser textured stainless steel surfaces, fluorosilanized or not, were tested under isothermal conditions in a pilot pasteurization facility fed with a model dairy fluid (whey protein and calcium solution). Multi-scale characterizations of those surfaces before and after fouling, using a wide range of analytical tools (goniometry, SEM, ToF-SIMS, EPMA X-Ray mappings) allowed for a better comprehension of the impact of surface energy and morphology modifications on the fouling behavior while highlighting their complex interactions in fouling governance. Lower surface energy was shown to be an asset against deposit growth, as fluorosilanization of native stainless steel allowed to reduce fouling by 72% (wt.%). The relative sizes of surface relief versus fouling agents has been found crucial, as it impacts interlocking phenomena. Textured surfaces have shown a tremendous increase in fouling (+391% for textured, +86% for fluorosilanized textured). However, interesting fouling performances were obtained on smooth, hydrophobic surfaces, as a reduction by 83% of fouling weight was achieved with fluorosilanized polished samples.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
ENSCL
CNRS
INRA
Centrale Lille
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères
Processus aux Interfaces et Hygiène des Matériaux (PIHM)

Submission date :

2019-05-17T09:11:22Z
2020-12-07T08:44:03Z