Phytosterol Stabilized Emulsions: Interpacial Complexation and Structural Investigations

Abstract Mechanisms operative in phytosterol (Generol 122®) stabilized oil-in-water emulsions have been described by studying the behavior of Generol 122® in the presence of an amphoteric surfactant, Deriphat 160C® (sodium lauriminodipropionate). Interfacial intermolecular complexation of Generol 122® as cosurfactant with the amphoteric Deriphat 160C®, has been proposed from NMR and IR studies. Such association complexes appear to form liquid crystalline phases at the oil-water interfaces. A ternary phase diagram of Generol 122®:Deriphat 160C®:water was constructed and the presence of various liquid crystalline phases has been demonstrated.