Effects of surfactants and coagulation conditions on the morphology of Gac oil - chitosan microcapsules

Abstract

Gac oil was encapsulated by driping Gac oil - chitosan emulsion into alkaline solution. Gac oil - chitosan emulsion was homogenized at 4 bars using homogeniser IKA Ultra_Turrax T18 Basic and formed an oil emulsion in water. Investigated factors included alkaline types, alkaline concentration, and surfactants. Encapsulation process was evaluated through the microcapsule’s size and roundness using image analysis (ImageJ). Results showed that the alkaline solution and surfactants had no influence on the microcapsule morphology. The formed microcapsule was highly separated and had a medium roundness.