Efecto de la temperatura sobre la transferencia de agua durante la deshidratación osmótica de papa (Solanum tuberosum L.)
Date
2014-10-01
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
El principal objetivo de este trabajo fue estudiar la cinética de deshidratación osmótica de
papa (Solanum Tuberosum L.). Se comparó el ajuste de los datos experimentales con el modelo cinético fenomenológico y con el modelo de Azuara. Para ello, en cubos de 1 cm de arista
se evaluó el efecto de la temperatura (30 oC, 40 oC y 50 oC) sobre los coeficiente de difusión
efectiva del agua y sólidos. Se determinó la pérdida de peso de agua y la ganancia de sólidos.
Las mayores pérdidas de agua se obtuvieron a la temperatura de 50 oC.
Se calcularon los parámetros cinéticos ajustándose adecuadamente a los modelos matemáticos respectivos para la pérdida de agua y la ganancia de sólidos. Asimismo, se determinó
la energía de activación mediante la ecuación de Arrhenius siendo superior la energía de
activación para la difusión en la ganancia de sólidos.
The main purpose for this work is to study the osmotic dehydration kinetics of potatoes (Solanum Tuberosum L.). Thus, a comparison of fitness for the experimental data related to the phenomeno- logical kinetic model and Azuara’s model was made. When applying to 1 cm size potatoes cubes, effect of temperature (30 oC, 40 oC and 50oC) on effective diffusivity coefficients for both water and solids was measured. Water weight loss and solids increase was determined. The highest water loss occurred at 50 o C. The different models kinetics parameters were calculated and a good fitness to mathematical respective relationships was obtained, both for water loss and solids increments. Furthermore, activation energy when applying Arrhenius equation was calculated, being higher for the diffusivity of solids gain.
The main purpose for this work is to study the osmotic dehydration kinetics of potatoes (Solanum Tuberosum L.). Thus, a comparison of fitness for the experimental data related to the phenomeno- logical kinetic model and Azuara’s model was made. When applying to 1 cm size potatoes cubes, effect of temperature (30 oC, 40 oC and 50oC) on effective diffusivity coefficients for both water and solids was measured. Water weight loss and solids increase was determined. The highest water loss occurred at 50 o C. The different models kinetics parameters were calculated and a good fitness to mathematical respective relationships was obtained, both for water loss and solids increments. Furthermore, activation energy when applying Arrhenius equation was calculated, being higher for the diffusivity of solids gain.
Description
Keywords
papa, difusividad efectiva, deshidratación osmótica, modelos cinéticos, potato, effective diffusivity, osmotic dehydration, kinetic models
Citation
Proyecciones, Vol.12 No. 2
Collections
Endorsement
Review
Supplemented By
Referenced By
Creative Commons license
Except where otherwised noted, this item's license is described as openAccess