关键词: 海马, 真空冷冻干燥, 干燥动力学, 水分有效扩散系数, seahorse, vacuum freeze drying, mathematical model, effective diffusion coefficients

Abstract: The drying characteristic, effective diffusion coefficients and mathematical modeling of seahorse vacuum freeze-drying were investigated in the present study. According to kinetics of seahorse for vacuum freeze drying obtained in this study, the weight of seahorse kept stable after drying twenty-five hours, and effective diffusion coefficients during for drying process was 2.442 3×10-10 m2/s. Through fitting of experimental data to eight thin layer drying models, the results indicated that the Page model was a suitable model for vacuum freeze drying techniques, with correlation coefficient (R2), reduced chi-square (χ2) and root mean square error (RMSE) as 0.999 4, 5.961 9×10-5 and 2.090 0×10-4, respectively. The results would provide theoretical basis for the production and processing of seahorse drying.