The use of a diffusional model in determining the permeability of corn pericarp

Fick's diffusional model was used to fit drying curves of corn kernel in which the endosperm and germ were modeled as a homogeneous sphere with the pericarp being part of the external mass transfer resistance. Drying curves of whole and dehulled kernels were determined at 50°C and 60°C together...

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Autores principales: Tolaba, M.P., Suarez, C., Viollaz, P.E.
Formato: JOUR
Materias:
Diffusion > Mathematical Models
Drying > Mathematical Models
Moisture
Corn Kernels
Corn Pericarp Permeability Determination
Food Products
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02608774_v12_n1_p53_Tolaba
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02608774_v12_n1_p53_Tolaba
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spelling todo:paper_02608774_v12_n1_p53_Tolaba2023-10-03T15:11:57Z The use of a diffusional model in determining the permeability of corn pericarp Tolaba, M.P. Suarez, C. Viollaz, P.E. Diffusion--Mathematical Models Drying--Mathematical Models Moisture Corn Kernels Corn Pericarp Permeability Determination Food Products Fick's diffusional model was used to fit drying curves of corn kernel in which the endosperm and germ were modeled as a homogeneous sphere with the pericarp being part of the external mass transfer resistance. Drying curves of whole and dehulled kernels were determined at 50°C and 60°C together with the equilibrium moisture contents at the respective temperatures. Diffusion coefficients for the corn kernel without pericarp and for the pericarp alone were determined by fitting the experimental drying curves to the diffusional model. It was found that moisture diffuses about eight times faster through the endosperm and germ than through the pericarp. The permeabilities of the pericarp at 50°C and 60°C were 1·8 × 10-7 and 1·6 × 10-7 g cm/cm2 atm s, respectively. © 1990. Fil:Tolaba, M.P. 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_v12_n1_p53_Tolaba
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Diffusion--Mathematical Models
Drying--Mathematical Models
Moisture
Corn Kernels
Corn Pericarp Permeability Determination
Food Products
spellingShingle Diffusion--Mathematical Models
Drying--Mathematical Models
Moisture
Corn Kernels
Corn Pericarp Permeability Determination
Food Products
Tolaba, M.P.
Suarez, C.
Viollaz, P.E.
The use of a diffusional model in determining the permeability of corn pericarp
topic_facet Diffusion--Mathematical Models
Drying--Mathematical Models
Moisture
Corn Kernels
Corn Pericarp Permeability Determination
Food Products
description Fick's diffusional model was used to fit drying curves of corn kernel in which the endosperm and germ were modeled as a homogeneous sphere with the pericarp being part of the external mass transfer resistance. Drying curves of whole and dehulled kernels were determined at 50°C and 60°C together with the equilibrium moisture contents at the respective temperatures. Diffusion coefficients for the corn kernel without pericarp and for the pericarp alone were determined by fitting the experimental drying curves to the diffusional model. It was found that moisture diffuses about eight times faster through the endosperm and germ than through the pericarp. The permeabilities of the pericarp at 50°C and 60°C were 1·8 × 10-7 and 1·6 × 10-7 g cm/cm2 atm s, respectively. © 1990.
format JOUR
author Tolaba, M.P.
Suarez, C.
Viollaz, P.E.
author_facet Tolaba, M.P.
Suarez, C.
Viollaz, P.E.
author_sort Tolaba, M.P.
title The use of a diffusional model in determining the permeability of corn pericarp
title_short The use of a diffusional model in determining the permeability of corn pericarp
title_full The use of a diffusional model in determining the permeability of corn pericarp
title_fullStr The use of a diffusional model in determining the permeability of corn pericarp
title_full_unstemmed The use of a diffusional model in determining the permeability of corn pericarp
title_sort use of a diffusional model in determining the permeability of corn pericarp
url http://hdl.handle.net/20.500.12110/paper_02608774_v12_n1_p53_Tolaba
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