Viscoelastic behavior and fouling propensity of concentrated suspended particles of orange juice with defined size distributions: Towards a better control of the deposit layer properties during microfiltration

Innovative approach to predict the fouling propensity of orange juice suspended particles through relevant physical characterisation

“…The projection of the individuals on the PCA, emphasised that individuals with close contents of large and fine particles (in the center of PCA), were characterised by low V h , n', n" and shear strain at flow point (ɣ f ) and high SRF values (lower two quadrants). This trend is in line with literature findings revealing that higher size polydispersity of suspended particles in a fouling deposit leads to a higher specific resistance to filtration of this deposit (Bourcier et al, 2016;Demoulin et al, 2022).…”

“…When comparing the values of the statistical diameters observed in this work with those of the literature, it can be noticed that the studied size range was much higher than the one classically observed for citrus juices (Betoret et al, 2009;Dahdouh et al, 2015a;di Corcia et al, 2020;Gomes et al, 2022). Samples with very different suspended particles size distributions were deliberately analysed to survey a rather wide range of size distribution and likely physical properties.…”

“…The more the deposit was rich in fine particles, the lower the force needed to reach 0.001 m of height. Some authors highlighted the role of fine particles in the compressibility, as fine particles can migrate easily within the particles network thus facilitating its rearrangement (Bourcier et al., 2016; Demoulin et al., 2022). Other studies demonstrated the dependency between the particle‐size and textural properties as well as the decrease of the F max when the suspension was rich in fine particles (Labaky et al., 2020; Buergy et al., 2021).…”

“…Suspended particles were isolated from orange juice by centrifugation (Centrifuge Model 5810R, Eppendorf, Hamburg, Germany and Centrifuge Model Avanti J‐E, Beckman Coulter, Indianapolis, USA). According to centrifugation conditions (Dahdouh et al., 2016a; Demoulin et al., 2022), two size class populations were selected, that is a population of large particles (>10 μm) and one of fine particles (between 0.1 and 10 μm). Mixtures, in different mass proportion, of these two size class populations have been made with an objective to obtain 18 samples, objects of study and whose characterisation will be proposed ( cf .…”

Encapsulation of Concentrated Solution Obtained by Block Freeze Concentration in Calcium Alginate and Corn Starch Calcium Alginate Hydrogel Beads

“…In all cases, the G′ modulus and G″ modulus increased with the angular frequency, where the values of G″ was higher than G′, indicating that the solutions presented predominance of the viscous component over the elastic one, verifying the typical behavior of liquid solutions [45]. Additionally, both G′ and G″ behaviors increased with an increase in concentration solutions, while the CSAlg with liquid solutions presented higher values of viscoelastic parameters than those containing only Alg with liquid solution.…”