Osmotic dehydration as a pretreatment for convection drying is used with the purpose to get high quality dried foods. The effect of osmotic treatment at sucrose concentration of 40 ºBrix and convection drying at 60 and 70 °C (air velocity of 0.8 m/s) were investigated. The quality of dehydrated pineapple was investigated by physicochemical properties, weight loss, textural characteristics, and sensorial parameters. Samples dried at 70 °C showed the fastest drying kinetics reached the required humidity at 2.5 hours. The sensory analysis allows establishing that the dehydrated pineapple at conditions of soluble solids of 40 ºBrix, air temperature of the dryer at 70 °C be the best in acceptability in comparison with samples dried at 60°C. The samples were microbiologically safe for the consumer because they do not present a count of Escherichia coli and molds and yeasts.
Efecto de la inclusión de camote morado (Ipomoea batata) en la elaboración de mermelada de naranjilla (Solanum quitoense) Effect of the inclusion of batata (Ipomoea batata) in the preparation of naranjilla jam (Solanum quitoense
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