Fig. (3) RMSD values of Flower Pollination Algorithms for LLE parameter identification of NRTL and UNIQUAC models in food products systems. Mixtures: a) water + levulinic acid + dimethyl succinate at 298.15K, b) water + levulinic acid + glutarate at 298.15 K, c) palm oil + palmitic acid+ ethanol + water at 318.2 K and d) limonene + carvone + ethanol + water at 298.2 K.