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Abstract:

A model for isothermal bound water diffusion in grains and other starchy materials was derived. Assuming that spreading pressure gradient is the driving force for diffusion, an analytical expression for the variation of diffusion coefficient with moisture content was derived. When applied to predict the variation of the diffusion coefficient with moisture for some cereal grains and starches, the curves show a maximum for moisture contents about 0.10-0.15 kg water per kg dry solid. The expression for moisture variation of the diffusion coefficient was used to simulate the drying behavior of cereal grains for known values of initial and equilibrium moisture contents with satisfactory results. © 2003 Published by Elsevier Ltd.

Registro:

Documento: Artículo
Título:Diffusion of bound water in starchy materials: Application to drying
Autor:Aguerre, R.J.; Suarez, C.
Filiación:Departamento de Tecnología, Universidad Nacional de Luján, Cruce Rutas 5 y 7, C.C. 221, (6700) Lujan, Pcia. de Buenos Aires, Argentina
Depto. de Indust. Tecn. de Alimentos, Fac. de Ciencias Exactas y Naturales, Ciudad Universitaria, Nunez, Buenos Aires 1428, Argentina
Palabras clave:Diffusion in starches; Grain drying; Moisture diffusivity; Sorption; Variable diffusivity; Computer simulation; Diffusion; Drying; Kinetic theory; Mathematical models; Moisture; Sorption; Starch; Diffusion in starches; Grain drying; Moisture diffusivity; Variable diffusivity; Grain (agricultural product)
Año:2004
Volumen:64
Número:3
Página de inicio:389
Página de fin:395
DOI: http://dx.doi.org/10.1016/j.jfoodeng.2003.11.007
Título revista:Journal of Food Engineering
Título revista abreviado:J Food Eng
ISSN:02608774
CODEN:JFOED
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02608774_v64_n3_p389_Aguerre

Referencias:

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Citas:

---------- APA ----------
Aguerre, R.J. & Suarez, C. (2004) . Diffusion of bound water in starchy materials: Application to drying. Journal of Food Engineering, 64(3), 389-395.
http://dx.doi.org/10.1016/j.jfoodeng.2003.11.007
---------- CHICAGO ----------
Aguerre, R.J., Suarez, C. "Diffusion of bound water in starchy materials: Application to drying" . Journal of Food Engineering 64, no. 3 (2004) : 389-395.
http://dx.doi.org/10.1016/j.jfoodeng.2003.11.007
---------- MLA ----------
Aguerre, R.J., Suarez, C. "Diffusion of bound water in starchy materials: Application to drying" . Journal of Food Engineering, vol. 64, no. 3, 2004, pp. 389-395.
http://dx.doi.org/10.1016/j.jfoodeng.2003.11.007
---------- VANCOUVER ----------
Aguerre, R.J., Suarez, C. Diffusion of bound water in starchy materials: Application to drying. J Food Eng. 2004;64(3):389-395.
http://dx.doi.org/10.1016/j.jfoodeng.2003.11.007