Oleofoams: Toward new food products and soft materials

Foams are based on gas bubbles dispersed in a liquid phase containing surface-active species. Two different categories of liquid foams exist depending on the nature of the continuous phase: aqueous (water-based) and non-aqueous (oil-based). Aqueous foams have been widely used for industrial applications for years, whereas oil foams were first discovered in the 1970s and essentially ignored for about 30 years. © 2021, American Oil Chemists Society. All rights reserved.