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Stable 'arrested' non-aqueous edible foams based on food emulsifiers
1Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Gent, Belgium. ashok.2510@gmail.com ashok.patel@inl.int.
Food & Function
|March 16, 2017
Summary
Edible emulsifiers create stable oil foams with structured interfaces and high air content. These foams exhibit unique rheological properties, offering potential for novel food product development.
Area of Science:
- Colloid and Surface Science
- Food Science and Technology
- Materials Science
Background:
- Non-aqueous foams, or oil foams, are complex colloidal systems with significant industrial relevance.
- Stabilizing these foams, especially using edible ingredients, presents challenges due to interface dynamics.
- Understanding the microstructure and rheology is crucial for controlling foam properties and applications.
Purpose of the Study:
- To fabricate stable oil foams using edible emulsifiers.
- To investigate the microstructure and rheological behavior of these non-aqueous foams.
- To explore potential industrial applications in food product development.
Main Methods:
- Fabrication of oil foams using sucrose esters and lecithin as edible emulsifiers.
- Advanced microscopy techniques to analyze foam microstructure and air-oil interfaces.
- Rheological measurements to characterize yielding and thixotropic behaviors.
Main Results:
- Successfully produced stable oil foams with high air content (high overrun).
- Observed structured air-oil interfaces within the 'arrested' non-aqueous foams.
- Demonstrated unique rheological properties, including yielding and thixotropy.
Conclusions:
- Edible emulsifiers can effectively stabilize oil foams with desirable microstructural features.
- The characterized rheological behavior suggests potential for creating novel food textures.
- These findings open avenues for industrial applications in textured food product innovation.
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