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RESEARCH PAPERS

KINETIC DRYING EXPERIMENTAL DATA AND MATHEMATICAL MODEL FOR JACKFRUIT (Artocarpus integrifolia) SLICES
DATOS EXPERIMENTALES Y MODELO MATEMÁTICO DE LA CINÉTICA DE SECADO DE RODAJAS DE JACA (Artocarpus integrifolia)

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Pages 89-92 | Received 07 Aug 2005, Accepted 23 Jan 2006, Published online: 02 Oct 2009
 

Abstract

Resumen

Jackfruit drying curves were obtained using a convective vertical tray drier at dry bulb temperatures of 50, 60 and 70°C requiring of 9.92, 6.1 and 4.75 h, respectively, to reach a dry basis moisture content of 21.3 %. The Fick diffusion and the PAGE models were fitted to the experimental data of drying velocity using non-linear regression analysis. The coefficient of determination obtained for the Fick model was high (R2 = 0.99). Water activity was determined throughout the drying process for the three drying temperatures and used to generate moisture isotherms at the three drying temperatures.

Se obtuvieron curvas de secado de jaca usando un secador de bandejas con convección vertical a temperaturas de bulbo seco de 50, 60 y 70°C requiriendo 9.92, 6.1 y 4.75 h, respectivamente, para alcanzar un contenido de humedad de 21.3 % en base seca. Los modelos de difusión de Fick y de PAGE fueron ajustados a los datos experimentales de velocidad de secado usando análisis de regresión no lineal. El coeficiente de determinación obtenido para el modelo de Fick fue elevado (R2 = 0.99). La actividad de agua fue determinada durante todo el proceso de secado para las 3 temperaturas y se utilizó para generar las isotermas de sorción a las 3 temperaturas de secado.

Palabras clave: Jaca, secador de convección, modelo de Fick

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