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Isotermas de desorcion de humedad en pitahaya amarilla (selenicereus megalanthus)

Authors: Aponte, Alfredo Ayala; Serna Cock, Liliana; Rodriguez, Gloria;

Isotermas de desorcion de humedad en pitahaya amarilla (selenicereus megalanthus)

Abstract

Se determinaron las isotermas de desorción de humedad en pitahaya amarilla a 15, 25 y 35ºC mediante el método gravimétrico en el intervalo de actividad de agua entre 0.111 y 0.901. Los valores experimentales de desorción se ajustaron mediante los modelos de GAB, Henderson, Smith, Oswin y Chung y Fost, usualmente usados en alimentos. El calor isostérico de desorción (Qst) se determinó mediante la ecuación de Clausius-Clapeyron. Los resultados mostraron que las isotermas fueron de tipo III. El contenido de humedad de equilibrio (CHE) presentó dependencia con la temperatura, esta disminuyó con el aumento de la temperatura para un valor constante de actividad de agua. El modelo GAB fue el de mejor ajuste de los valores experimentales. El Qst disminuyó con el aumento del CHE, desde 61.43 hasta 45.11 kJ/mol para humedades de 0.08 hasta 0.56 (g agua/g ms) respectivamente.

Keywords

Cactaceae, isosteric heat of sorption, Agriculture (General), modelos matemáticos, Calor isostérico de sorção, Calor isostérico de sorción., Calor isostérico de sorción, mathematical models, TP248.13-248.65, S1-972, Biotechnology

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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