Kinetic modelling of the solid–liquid extraction process of polyphenolic compounds from apple pomace: influence of solvent composition and temperature

Abstract This study aims to assess kinetic modelling of the solid–liquid extraction process total polyphenolic compounds (TPC) from apple pomace (AP). In this regard, we investigated effects temperature and solvent (i.e. water, ethanol, acetone) on TPC over various periods. The highest yield 11.1 ± 0.49 mg gallic acid equivalent (GAE)/g db (dry basis) was achieved with a mixture 65% acetone–35% water (v/v) at 60 °C. kinetics solvent-based processes were assessed via first-order second-order models, an associated investigation parameters rate constants, saturation concentrations, activation energies. model sufficient describe mechanism AP. provides understanding mass transfer involved in compound process, thus facilitating future large-scale design, optimization, control valorize waste. Graphical