High pressure solvent extraction of maritime pine bark: Study of fractionation, solvent flow rate and solvent composition

► High pressure extraction of maritime pine bark (source of procyanidins). ► Study of extraction kinetics, fractionation, solvent flow rate and solvent composition. ► These experimental variables are of major importance when defining operational conditions. ► CO2:EtOH (30:70) combines the optimum characteristics of extract composition and kinetic behavior.