Modeling water uptake in a cereal grain during soaking

A diffusion equation to describe the isothermal absorption of liquid water in a spherical solid that undergoes uniform swelling was derived. The resulting partial differential equation was solved using a finite difference method, taking into consideration water content dependence of the diffusion co...

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Autores principales:	Bello, M., Tolaba, M.P., Aguerre, R.J., Suarez, C.
Formato:	JOUR
Materias:	Non-linear diffusion Rice kernel Swelling Water absorption Arrhenius equation Brown rice Cereal grains Developed model Diffusion Coefficients Diffusion equations Increasing functions Liquid water Moisture contents Nonlinear diffusion Rice kernels Saturation values Self-diffusion coefficients Soaking conditions Soaking temperature Water uptake Activation energy Diffusion Grain (agricultural product) Moisture determination Partial differential equations Water content
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_02608774_v97_n1_p95_Bello
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	todo:paper_02608774_v97_n1_p95_Bello2023-10-03T15:12:25Z Modeling water uptake in a cereal grain during soaking Bello, M. Tolaba, M.P. Aguerre, R.J. Suarez, C. Non-linear diffusion Rice kernel Swelling Water absorption Arrhenius equation Brown rice Cereal grains Developed model Diffusion Coefficients Diffusion equations Increasing functions Liquid water Moisture contents Nonlinear diffusion Rice kernel Rice kernels Saturation values Self-diffusion coefficients Soaking conditions Soaking temperature Water uptake Activation energy Diffusion Grain (agricultural product) Moisture determination Partial differential equations Water content Water absorption A diffusion equation to describe the isothermal absorption of liquid water in a spherical solid that undergoes uniform swelling was derived. The resulting partial differential equation was solved using a finite difference method, taking into consideration water content dependence of the diffusion coefficient. The developed model was applied to simulate the water uptake of brown rice for the soaking temperatures of 25, 45, 55 and 65 °C. The estimated "differential" diffusion coefficients were a strongly increasing function of moisture content for all temperatures tested, approaching to the self-diffusion coefficients of water for brown rice moisture contents near to the saturation values. The "integral" diffusion coefficient corresponding to range of moisture content resulting from soaking conditions were calculated and correlated according to Arrhenius equation with an activation energy of 32.5 kJ/mol. © 2009 Elsevier Ltd. All rights reserved. Fil:Bello, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tolaba, M.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Aguerre, R.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02608774_v97_n1_p95_Bello
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Non-linear diffusion Rice kernel Swelling Water absorption Arrhenius equation Brown rice Cereal grains Developed model Diffusion Coefficients Diffusion equations Increasing functions Liquid water Moisture contents Nonlinear diffusion Rice kernel Rice kernels Saturation values Self-diffusion coefficients Soaking conditions Soaking temperature Water uptake Activation energy Diffusion Grain (agricultural product) Moisture determination Partial differential equations Water content Water absorption
spellingShingle	Non-linear diffusion Rice kernel Swelling Water absorption Arrhenius equation Brown rice Cereal grains Developed model Diffusion Coefficients Diffusion equations Increasing functions Liquid water Moisture contents Nonlinear diffusion Rice kernel Rice kernels Saturation values Self-diffusion coefficients Soaking conditions Soaking temperature Water uptake Activation energy Diffusion Grain (agricultural product) Moisture determination Partial differential equations Water content Water absorption Bello, M. Tolaba, M.P. Aguerre, R.J. Suarez, C. Modeling water uptake in a cereal grain during soaking
topic_facet	Non-linear diffusion Rice kernel Swelling Water absorption Arrhenius equation Brown rice Cereal grains Developed model Diffusion Coefficients Diffusion equations Increasing functions Liquid water Moisture contents Nonlinear diffusion Rice kernel Rice kernels Saturation values Self-diffusion coefficients Soaking conditions Soaking temperature Water uptake Activation energy Diffusion Grain (agricultural product) Moisture determination Partial differential equations Water content Water absorption
description	A diffusion equation to describe the isothermal absorption of liquid water in a spherical solid that undergoes uniform swelling was derived. The resulting partial differential equation was solved using a finite difference method, taking into consideration water content dependence of the diffusion coefficient. The developed model was applied to simulate the water uptake of brown rice for the soaking temperatures of 25, 45, 55 and 65 °C. The estimated "differential" diffusion coefficients were a strongly increasing function of moisture content for all temperatures tested, approaching to the self-diffusion coefficients of water for brown rice moisture contents near to the saturation values. The "integral" diffusion coefficient corresponding to range of moisture content resulting from soaking conditions were calculated and correlated according to Arrhenius equation with an activation energy of 32.5 kJ/mol. © 2009 Elsevier Ltd. All rights reserved.
format	JOUR
author	Bello, M. Tolaba, M.P. Aguerre, R.J. Suarez, C.
author_facet	Bello, M. Tolaba, M.P. Aguerre, R.J. Suarez, C.
author_sort	Bello, M.
title	Modeling water uptake in a cereal grain during soaking
title_short	Modeling water uptake in a cereal grain during soaking
title_full	Modeling water uptake in a cereal grain during soaking
title_fullStr	Modeling water uptake in a cereal grain during soaking
title_full_unstemmed	Modeling water uptake in a cereal grain during soaking
title_sort	modeling water uptake in a cereal grain during soaking
url	http://hdl.handle.net/20.500.12110/paper_02608774_v97_n1_p95_Bello
work_keys_str_mv	AT bellom modelingwateruptakeinacerealgrainduringsoaking AT tolabamp modelingwateruptakeinacerealgrainduringsoaking AT aguerrerj modelingwateruptakeinacerealgrainduringsoaking AT suarezc modelingwateruptakeinacerealgrainduringsoaking
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Modeling water uptake in a cereal grain during soaking

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