The kinetics of transport of benzoic acid in triglyceride-in-water emulsions stabilized by Tween 80 was measured by a continuous flow kinetic apparatus, The determination of the liquid-liquid partitioning of the solute in two-phase systems enabled estimation of the retention of benzoic acid by the triglycerides and the micellar solution and calculation of the solute theoretical distribution in emulsions, The initial rates of release of benzoic acid from 2 to 5 mmol m(-2) s(-1) were found proportional to the initial concentration of benzoic acid in the emulsions.