Research Article

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

Table 5

Curve fitting criteria for the various mathematical models and parameters for pumpkin slice dried at zone I.

PretreatmentsModelsConstants (%)

ControlLogarithmic, , 0.937800.005930.0746817.88
Henderson and Babi’s, 0.989190.002870.0501823.43
Lewis0.961580.009180.0958518.8
Page, 0.990290.002420.0476124.86
Two-term exponential, 0.998340.000410.019639.79
Diffusion approximation, , 0.986520.003630.0563917.53
Mindili et al., , , 0.998260.000490.020143.66

1% citric acidLogarithmic, , 0.9956450.000900.0291010.02
Henderson and Babi’s, 0.9967070.000720.025289.30
Lewis0.995490.000880.0295911.06
Page, 0.995270.000980.030357.34
Two-term exponential, 0.997270.000670.025114.65
Diffusion approximation, , 0.995070.001090.0310211.87
Mindili et al., , , 0.995360.001090.031025.10

2% saltLogarithmic, , 0.996280.000310.017145.88
Henderson and Babi’s, 0.997920.000470.021075.32
Lewis0.997530.000530.023027.23
Page, 0.997770.000510.021845.10
Two-term exponential, 0.9985570.000350.017584.73
Diffusion approximation, , 0.997850.000520.021474.89
Mindili et al., , , 0.997860.000560.000234.69

1% salt blanchedLogarithmic, , 0.991590.000780.027038.60
Henderson and Babi’s, 0.995380.000940.029498.64
Lewis0.995430.000930.029538.65
Page, 0.995380.000930.029548.66
Two-term exponential, 0.996560.000760.025609.27
Diffusion approximation, , 0.995380.001020.029518.65
Mindili et al., , , 0.994120.001400.033216.14