The Effect of Polysaccharide Adsorption on Surface Potential of Phospholipid Monolayers Spread at Water–Air Interface

Abstract
Surface potential measurements were performed for the systems of egg phosphatidylcholine (PC)/cholesteryl-amylopectin and egg PC/cholesteryl-pullulan. The variations of surface potential of phospholipid monolayers on injection of polysaccharide derivatives into the aqueous subphase were monitored for various surface densities of phospholipids and polysaccharide solution concentrations. At the phospholipid surface concentrations above 1014 molecules/cm2, the changes in the surface potential of monolayers were shown to be higher for amylopectin than for pullulan.