Title :

Predicting the distribution of whey protein fouling in a plate heat exchanger using the kinetic parameters of the thermal denaturation reaction of β-lactoglobulin and the bulk temperature profiles

Author(s) :

Blanpain Avet, Pascal [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Andre, Christophe [Auteur]
Hautes Etudes d’Ingénieur [Lille] [HEI]
Khaldi, M. [Auteur]
Bouvier, Laurent [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Petit, J. [Auteur]
Six, Thierry [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Jeantet, R. [Auteur]
Croguennec, T. [Auteur]
Delaplace, Guillaume [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207

Journal title :

Journal of Dairy Science

Abbreviated title :

Journal of Dairy Science

Volume number :

99

Pages :

9611-9630

Publisher :

American Dairy Science Association

Publication date :

2016-10-05

ISSN :

0022-0302

English keyword(s) :

β-lactoglobulin
plate heat exchanger
fouling mass prediction
denaturation kinetic constant
concentration profile modelling

HAL domain(s) :

Sciences du Vivant [q-bio]/Alimentation et Nutrition
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]
Sciences de l'ingénieur [physics]/Génie des procédés
Sciences du Vivant [q-bio]/Biochimie, Biologie Moléculaire/Biologie moléculaire

English abstract : [en]

Fouling of plate heat exchangers (PHE) is a severe problem in the dairy industry, notably because the relationship between the build-up of protein fouling deposits and the chemical reactions taking place in the fouling ...
Show more >Fouling of plate heat exchangers (PHE) is a severe problem in the dairy industry, notably because the relationship between the build-up of protein fouling deposits and the chemical reactions taking place in the fouling solution has not yet been fully elucidated. Experiments were conducted at pilot scale in a corrugated PHE, and fouling deposits were generated using a model β-lactoglobulin (β-LG) fouling solution for which the β-LG thermal denaturation reaction constants had been previously determined experimentally. Then 18 different bulk temperature profiles within the PHE were imposed. Analysis of the fouling runs shows that the dry deposit mass per channel versus the ratio R=kunf/kagg (with kunf and kagg representing, respectively, the unfolding and aggregation rate constants computed from both the identification of the β-LG thermal denaturation process and knowledge of the imposed bulk temperature profile into the PHE channel) is able to gather reasonably well the experimental fouling mass data into a unique master curve. This type of representation of the results clearly shows that the heat-induced reactions (unfolding and aggregation) of the various β-LG molecular species in the bulk fluid are essential to capture the trend of the fouling mass distribution inside a PHE. This investigation also illustrates unambiguously that the release of the unfolded β-LG (also called β-LG molten globule) within the bulk fluid (and the absence of its consumption in the form of aggregates) is a key phenomenon that controls the extent of protein fouling as well as its location inside the PHE.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Processus aux Interfaces et Hygiène des Matériaux (PIHM)

Submission date :

2022-02-01T14:13:24Z
2022-02-01T15:00:21Z