Physicochemical Aspects of an Emulsifier Function

Abstract

Food emulsions are complex formulations developed with many success criteria, including stability, safety, taste, and process feasibility. A key component of all these attributes is the correct choice of one, or multiple, emulsifiers that are compatible with all ingredients, food regulations, and the above criteria. The physical chemistry of emulsifiers in foods determines their efficiency and performance in a given formulation, and this chapter provides an overview of the surface properties of these materials and their phase behavior. Examples are provided for the main classes of food emulsifiers, enabling researchers and practitioners in food research, development, and processing to choose and apply these materials.