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Extraction kinetic modelling of total polyphenols and total anthocyanins from saffron floral bio-residues: Comparison of extraction methods
Food Chemistry ( IF 8.5 ) Pub Date : 2018-03-15 , DOI: 10.1016/j.foodchem.2018.03.059
Carla Da Porto , Andrea Natolino

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 (RS/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 RS/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.



中文翻译:

藏红花花卉生物残渣中总多酚和总花色苷的萃取动力学模型:萃取方法的比较

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。

更新日期:2018-03-15
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