Evaluación de los pretratamientos de deshidratación osmótica y microondas en la obtención de hojuelas de mango (Tommy Atkins)

Abstract

In the present study the effect of different drying processes of Mangos (Tommy Atkins) is studied. Osmotic dehydration (65 °Brix of 37 to 40 °C for 60 min), microwave drying (560 W by 7 min) and combined as pretreatment of drying (70 °C in an oven tray type and under the sun) were considered. Mangos with 11 to 14 °Brix and humidity 80% were rated cut to dimensions 1 x 1 x 0.4 cm. The weight loss and the drying time in the pretreated showed significant differences (p ≤ 0.05); the greatest weight loss was 66.0 % in the pretreatment combined. The parameters L (luminosity) and b∗ (blue-yellow) decreased (p ≤ 0.05). The combined pre-treatment is the one that eliminated more water and reduced drying times. However, osmotic dehydration was the one that best maintained the appearance features of dried mango flakes.