Research Article

Effect of Pretreatments and Solar Tunnel Dryer Zone on Drying Characteristics and Stability of Pumpkin (Cucurbita maxima) Slices

Table 6

Curve fitting criteria for the various mathematical models for pumpkin pretreated and dried at temperatures of zone II.

PretreatmentsModelsConstants (%)

ControlLogarithmic, , 0.966430.008530.0843219.79
Henderson and Babis, 0.943320.006580.077935.25
Lewis0.932270.014960.1223222.64
Page, 0.966720.007720.0841215.12
Two-term exponential, 0.991750.001890.0416317.59
Diffusion approximation, , 0.994270.001450.034754.56
Mindili et al., , , 0.972550.007680.0759218.86

1% citric acidLogarithmic, , 0.967180.008250.0812415.70
Henderson and Babis, 0.912370.010310.0918616.98
Lewis0.880050.015320.1174322.37
Page, 0.973720.005880.0727825.58
Two-term exponential, 0.993390.001470.036339.59
Diffusion approximation, , 0.993730.001570.035418.45
Mindili et al., , , 0.981700.005210.0603824.99

2% saltLogarithmic, , 0.974810.006720.0748421.56
Henderson and Babis, 0.930320.007960.0859428.09
Lewis0.944290.012870.1134622.34
Page, 0.975720.005900.0736015.99
Two-term exponential, 0.994790.001250.033918.34
Diffusion approximation,, 0.996520.000930.027796.27
Mindili et al., , , 0.9859040.004160.0558211.43

1% salt blanchedLogarithmic, , 0.993880.001320.0325112.35
Henderson and Babis, 0.987360.001390.035369.11
Lewis0.986750.001960.0442410.56
Page, 0.993620.001220.0332514.49
Two-term exponential, 0.997210.000530.021928.40
Diffusion approximation, 0.999400.000130.010246.43
Mindili et al., , , 0.990330.002370.040718.59