Swelling of couscous grains under saturated conditions - Université de Lorraine Access content directly
Journal Articles Journal of Food Engineering Year : 2021

Swelling of couscous grains under saturated conditions


The article presents a grain-scale experimental approach for the study of a model that swells granular food material. During the swelling phase, both the evolution of particle size using image analysis and the spatially resolved field of diffusion coefficient of water inside the grains were studied using MRI measurements. A concentrically penetration of water in the cross section of the grains was shown on images. The experimental results were compared to classical models from the literature used to predict the swelling of polymeric materials. A simple first-order kinetic equation was shown to be adequate to describe the size evolution during swelling. Thus, the results suggested that the swelling dynamics was a water uptake-limiting mechanism because of the existence of a gelatinous layer at the grain surface formed during the manufacturing process, as previously reported in the literature.
Fichier principal
Vignette du fichier
S0260877421004362.pdf (2.95 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03516918 , version 1 (08-01-2024)


Attribution - NonCommercial



Sebastien Kiesgen de Richter, Naïma Gaudel, Claire Gaiani, Arthur Pascot, Maude Ferrari, et al.. Swelling of couscous grains under saturated conditions. Journal of Food Engineering, 2021, 319, pp.110910. ⟨10.1016/j.jfoodeng.2021.110910⟩. ⟨hal-03516918⟩
43 View
6 Download



Gmail Facebook X LinkedIn More