Title: Study of water distribution and shrinkage of apple tissue during dehydration with neutron tomography and finite element modeling
Authors: Aregawi, Wondwosen Abebe ×
Defraeye, Thijs
Vontobel, Peter
Lehmann, Eberhard
Carmeliet, Jan
Derome, Dominique
Verboven, Pieter
Nicolai, Bart #
Issue Date: Apr-2013
Host Document: InsideFood Symposium 2013
Conference: InsideFood Symposium location:Leuven, Belgium date:9-12 April 2013
Abstract: Dehydration of fruit during postharvest storage decreases its commercial value and the consumer acceptance. Understanding this process requires knowledge on both water transport and mechanical deformation. In this study, a comparison was made between different methods to study water distribution and shrinkage of apple tissue during dehydration: experimentally with quantitative neutron tomography, and numerically with finite element modeling using a nonlinear viscoelastic model coupled with water transport. Both techniques provided three-dimensional information of the transient water distribution and shrinkage of the cylindrical apple tissue during dehydration. The neutron experiments were found to accurately predict the water loss from the samples, when compared to gravimetric measurements, indicating this technique is successful in directly quantifying water content for this type of experiments. The total water loss and local water content of experiments and simulations also compared well, indicating the numerical model is a viable alternative to neutron experiments. This is a particular advantage since access to facilities which produce neutrons is limited.
Publication status: accepted
KU Leuven publication type: AC-p
Appears in Collections:Division of Mechatronics, Biostatistics and Sensors (MeBioS)
Department of Civil Engineering - miscellaneous
× corresponding author
# (joint) last author

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