Intrinsic significance of molecular aggregation in sucrose-surfactant separation by dialysis

Aqueous sucrose-surfactant mixtures were dialysed and the diffusates examined quantitatively for sucrose at intervals by spectrophotometric analysis. The effect of surfactants (lecithin and glycerol monostearate) on the dialysability of sucrose from these solutions was also investigated and the amount of sucrose dialysed was found to increase steadily only up to about 2h with lecithin slowing down the rate of sucrose dialysis much more than GMS. These variations in the dialysability of sucrose from the mixtures are explained in terms of molecular aggregation and these are confirmed by freezing point depression measurements. The results are discussed in terms of the significance of molecular aggregation on the gustatory qualities of sapid molecules.