Research Article

Optimization of Microwave-Osmotic Pretreatment of Apples with Subsequent Air-Drying for Preparing High-Quality Dried Product

Figure 2

Response surface curves for Hue angle: (a) effect of sucrose concentration and temperature at contact time 30 min; (b) effect of sucrose concentration and contact time at temperature 30°C. The dashed square line is for air-dried sample (Hue angle = 66.9), and the solid square line is for the freeze-dried sample (Hue angle = 78.4).
687548.fig.002a
(a)
687548.fig.002b
(b)