Escudo de la República de Colombia
Sistema Nacional de Biliotecas - Repositorio Institucional Universidad Nacional de Colombia Biblioteca Digital - Repositorio Institucional UN Sistema Nacional de Bibliotecas UN

Drying kinetics of two yam (dioscorea alata) varieties

Torres Gallo, Ramiro and Montes Montes, Everaldo Joaquín and Andrade Pizarro, Ricardo David and Pérez Sierra, Omar Andrés and Toscano, Hugo (2012) Drying kinetics of two yam (dioscorea alata) varieties. Dyna; Vol. 79, núm. 171 (2012); 175-182 DYNA; Vol. 79, núm. 171 (2012); 175-182 2346-2183 0012-7353 .

Texto completo

[img]
Vista previa
PDF
1MB
[img] Other
0B
[img] HTML
35kB

URL oficial: http://revistas.unal.edu.co/index.php/dyna/article...

Resumen

The aim of this research was the evaluation of the kinetics and the drying conditions, at laboratory scale, of two yam varieties (D. alata 9506-021 and 9506-027) from the germplasm bank of the University of Cordoba (Colombia). Two geometries (circular and square) were used for the study; the air temperature ranged from 40 to 70 °C and the air speed was 0.7 m s-1. The experimental data were fitted appropriately to Fick, Page, and Logarithmic models. Mass transfer of the yam slices was described by using Fick’s diffusion model, which was the best fitted model. Drying occurred mainly in the decline phase. Arrhenius described properly the dependency of the moisture diffusivity with temperature. Among the temperature range evaluated, moisture diffusivities varied from 1.70 x 10-9 to 6.84 x 10-10 m2/s and 1.33 x 10-9 to 6.30 x 10-10 m2/s for the D. alata 9506-21 and 9506-27, respectively. The drying activation energy for D. alata 9506-21 and 9506-27 varied from 23.19 to 25.72, and 16.03 to 17.82 kJ/mol, respectively.

Tipo de documento:Artículo - Article
Información adicional:Derechos de autor reservados
Palabras clave:effective diffusivity, Fick’s model, Page’s model, activation energy
Temática:6 Tecnología (ciencias aplicadas) / Technology > 62 Ingeniería y operaciones afines / Engineering
Unidad administrativa:Revistas electrónicas UN > Dyna
Código ID:30707
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :30 Junio 2014 13:09
Ultima modificación:28 Junio 2018 05:28
Ultima modificación:28 Junio 2018 05:28
Exportar:Clic aquí
Estadísticas:Clic aquí
Compartir:

Solamente administradores del repositorio: página de control del ítem

Vicerrectoría de Investigación: Número uno en investigación
Indexado por:
Indexado por Scholar Google WorldCat DRIVER Metabiblioteca OAIster BASE BDCOL Registry of Open Access Repositories SNAAC Red de repositorios latinoamericanos eprints Open archives La referencia Tesis latinoamericanas OpenDOAR CLACSO
Este sitio web se ve mejor en Firefox