Thin-layer drying curves of shelled corn were determined at 40, 50, 60 and 70 °C and 'high' relative humidity, for a moisture range from 21 to 12%, dry basis. Simulation of the experimental drying curves was performed by means of Fick's second law for diffusion out of a sphere, with constant diffusion coefficient. An accurate fitting of the experimental data was obtained assuming an equilibrium value given by the desorption isotherm of grain (static equilibrium moisture content). A reasonable agreement was also found between the dynamic equilibrium moisture content (obtained from the drying data) and the static one. A criterion was proposed, based on the monolayer moisture content, where the static equilibrium moisture content accurately fits the experimental drying curves. © 1991 Academic Press Limited.
| Documento: | Artículo |
| Título: | Diffusion coefficient estimation for shelled corn |
| Autor: | Tolaba, M.P.; Suarez, C.; Viollaz, P.E. |
| Filiación: | Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, (1428) Buenos Aires, Argentina, Argentina |
| Año: | 1991 |
| Volumen: | 24 |
| Número: | 4 |
| Página de inicio: | 303 |
| Página de fin: | 306 |
| Título revista: | LWT - Food Science and Technology |
| Título revista abreviado: | LWT - Food Sci. Technol. |
| ISSN: | 00236438 |
| CODEN: | LBWTA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00236438_v24_n4_p303_Tolaba |
