Abstract:Drying of seahorse by hot air, vacuum and cold air, the drying characteristic, effective diffusion coefficients, activation energy and mathematical modeling were investigated at various conditions. Kinetics of seahorse at 50 ℃, 60 ℃, 70 ℃, 80 ℃, 90 ℃ and 100℃ for hot air drying, 50 ℃, 60 ℃, 70 ℃, 80 ℃ and 90 ℃ for vacuum drying, and 20 ℃, 30 ℃ and 40 ℃ for cold air drying were obtained. With respect to R2, χ2 and RMSE, fitting of experimental data to 13 thin layer drying models resulted in Page and Midilli model were suitable model for hot air drying techniques, Page and Weibull model were suitable model for vacuum drying techniques, Page, Logarithmic and Weibull model were suitable model for cold air drying techniques. Effective diffusion coefficients Deff of hot air drying, vacuum drying and cold air drying varied between 1.1714×10-10 m2/s~6.7873×10-10 m2/s, 4.9252×10-10 m2/s~10.4920×10-10 m2/s and 2.3510×10-10 m2/s~4.0174×10-10 m2/s respectively. Activation energy values were 37.05 kJ/mol, 18.75 kJ/mol, and 20.55 kJ/mol respectively.
