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Grostete M, Lee J, Msibi Z, Boissel F, Jimenez M, Jeantet R, Lanotte L. Exploring the formation of surficial whey protein deposits under shear stress by rheofluidic approach. Int J Biol Macromol 2024; 274:133291. [PMID: 38908625 DOI: 10.1016/j.ijbiomac.2024.133291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 06/24/2024]
Abstract
Understanding how shear affects whey protein stability is crucial to deal with typical industrial issues occurring at the bulk solution/surface interface, such as fouling during heat treatments. However, at the state of the art, this effect remains unclear, contrary to that of temperature. This article presents a novel strategy to study the impact of shear rate and concentration on the accumulation of whey protein surficial deposits. It consists in applying a range of shear rates (0-200 s-1) at controlled temperature (65 °C) on whey protein solutions (5-10 wt%) by a parallel plate rheometer equipped with a glass disc, thus allowing the off-line characterization of the deposits by microscopy. Our results highlight an unequivocal effect of increasing shear stress. At 5 wt%, it fosters the formation of primary deposits (≈ 10 μm), whereas at 10 wt% it results in the development of complex branched structures (≈ 50 μm) especially for shear rates ranging from 140 s-1 to 200 s-1. Based on the classification by size of the observed populations, we discuss possible hypotheses for the deposit growth kinetics, involving the interplay of different physico-chemical protein-surface interactions and paving the way to future further investigations.
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Affiliation(s)
| | - Jeehyun Lee
- INRAE, Institut Agro, STLO, 35042 Rennes, France.
| | - Zanele Msibi
- INRAE, Institut Agro, STLO, 35042 Rennes, France.
| | | | - Maude Jimenez
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France; Institut Universitaire de, France, (IUF), 1 rue Descartes, 75231 Paris cedex.
| | | | - Luca Lanotte
- INRAE, Institut Agro, STLO, 35042 Rennes, France.
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McCarthy NA, Magan JB, Kelleher CM, Kelly AL, O’Mahony JA, Murphy EG. Heat treatment of milk: effect on concentrate viscosity, powder manufacture and end-product functionality. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2021.105289] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Paladii IV, Vrabie EG, Sprinchan KG, Bologa MK. Part 1: Classification, Composition, Properties, Derivatives, and Application. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2021. [DOI: 10.3103/s1068375521050112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Blanpain-Avet P, André C, Khaldi M, Bouvier L, Petit J, Six T, Jeantet R, Croguennec T, Delaplace G. 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. J Dairy Sci 2016; 99:9611-9630. [PMID: 27720151 DOI: 10.3168/jds.2016-10957] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 06/09/2016] [Indexed: 11/19/2022]
Abstract
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.
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Affiliation(s)
- P Blanpain-Avet
- INRA, PIHM-UR638 (Processus aux Interfaces et Hygiène des Matériaux), UMET (Unité Matériaux Et Transformations) UMR CNRS 8207, 369, rue Jules Guesde, BP 20039, 59651 Villeneuve d'Ascq Cedex, France.
| | - C André
- HEI (Ecole des hautes Etudes d'Ingénieur), Département Chimie, Textiles et Process Innovants, 13, rue de Toul, 59046 Lille Cedex, France
| | - M Khaldi
- INRA, PIHM-UR638 (Processus aux Interfaces et Hygiène des Matériaux), UMET (Unité Matériaux Et Transformations) UMR CNRS 8207, 369, rue Jules Guesde, BP 20039, 59651 Villeneuve d'Ascq Cedex, France
| | - L Bouvier
- INRA, PIHM-UR638 (Processus aux Interfaces et Hygiène des Matériaux), UMET (Unité Matériaux Et Transformations) UMR CNRS 8207, 369, rue Jules Guesde, BP 20039, 59651 Villeneuve d'Ascq Cedex, France
| | - J Petit
- ENSAIA-Université de Lorraine-Laboratoire d'Ingénierie des Biomolécules (LiBio), 2 avenue de la Forêt de Haye-TSA 40602, 54518 Vandoeuvre-les-Nancy cedex, France
| | - T Six
- INRA, PIHM-UR638 (Processus aux Interfaces et Hygiène des Matériaux), UMET (Unité Matériaux Et Transformations) UMR CNRS 8207, 369, rue Jules Guesde, BP 20039, 59651 Villeneuve d'Ascq Cedex, France
| | - R Jeantet
- Agrocampus Ouest, UMR 1253, STLO (Science et Technologie du Lait et de l'Oeuf), 65 rue de Saint-Brieuc, CS 84215, 35042 Rennes, France
| | - T Croguennec
- Agrocampus Ouest, UMR 1253, STLO (Science et Technologie du Lait et de l'Oeuf), 65 rue de Saint-Brieuc, CS 84215, 35042 Rennes, France
| | - G Delaplace
- INRA, PIHM-UR638 (Processus aux Interfaces et Hygiène des Matériaux), UMET (Unité Matériaux Et Transformations) UMR CNRS 8207, 369, rue Jules Guesde, BP 20039, 59651 Villeneuve d'Ascq Cedex, France
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