Analysis of the extraction kinetic modelling for natural compounds is essential for industrial application. The second order rate model was applied to estimate the extraction kinetics of conventional solid-liquid extraction (CSLE), ultrasound-assisted extraction (UAE) and microwave-assisted extraction (MAE) of total polyphenols (TPC) from saffron floral bio-residues at different solid-to-liquid ratios (R_S/L)(1:10, 1:20, 1:30, 1:50 g ml⁻¹), ethanol 59% as solvent and 66 °C temperature. The optimum solid-to-liquid ratios for TPC kinetics were 1:20 for CLSE, 1:30 for UAE and 1:50 for MAE. The kinetics of total anthocyanins (TA) and antioxidant activity (AA) were investigated for the optimum R_S/L for each method. The results showed a good prediction of the model for extraction kinetics in all experiments (R² > 0.99; NRMS 0.65–3.35%). The kinetic parameters were calculated and discussed. UAE, compared with the other methods, had the greater efficiency for TPC, TA and AA.

天然化合物的萃取动力学模型分析对于工业应用至关重要。应用二阶速率模型估算藏红花生物残渣中的常规固液萃取（CSLE），超声辅助萃取（UAE）和微波辅助萃取（MAE）总藏多酚（TPC）的萃取动力学。不同的固液比（R _{S / L}）（1：10、1：20、1：30、1：50 g ml ^-1），59％的乙醇溶剂和66°C的温度。TPC动力学的最佳固液比是：CLSE：1：20； UAE：1：30； MAE：1：50。研究了总花色苷（TA）和抗氧化剂活性（AA）的动力学，以求出最佳的R _{S / L}对于每种方法。结果表明，在所有实验中，该模型 均能很好地预测萃取动力学模型（R ² > 0.99； NRMS为0.65-3.35％）。动力学参数进行了计算和讨论。与其他方法相比，阿联酋对TPC，TA和AA的效率更高。