Article ID Journal Published Year Pages File Type
7585150 Food Chemistry 2018 7 Pages PDF
Abstract
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.
Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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