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Updated: Aug 5, 2026

In vitro Digestion of Emulsions in a Single Droplet via Multi Subphase Exchange of Simulated Gastrointestinal Fluids
Published on: November 18, 2022
From interfacial properties to product performance: Governing storage stability and aeration behavior in high-fat
Yue Li1, Xiaolu Geng2, Guosen Yan3
1Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Dairy Science and Technology, Food Quality & Design Group, Wageningen University, 6708WG Wageningen, the Netherlands.
Abstract:
High-fat dairy emulsions are widely applied in the bakery and beverage industries for their distinctive texture and functional properties, yet confront the core challenge of long-term storage stability and desirable aeration performance. This review focuses on the interfacial properties of such systems, systematically elaborating on the formation, structural features and characterization methods of oil-water (OW) interfacial layers in emulsions and oil-water-air (O-W-A) interfacial layers in foams. It highlights the pivotal role of interfacial layers in regulating kinetic stability, while noting the intrinsic thermodynamic instability of these systems that induces emulsion destabilization (flocculation, coalescence, creaming) and foam deterioration (drainage, coalescence, disproportionation). The review further summarizes key factors modulating interfacial properties and, in turn, emulsion stability and aeration performance, including compositional (milk proteins, emulsifiers, polysaccharides, milk fat crystals), processing (thermal treatment, homogenization) and environmental (pH, ionic strength) factors. Looking ahead, future efforts should focus on elucidating the dynamic interfacial evolution during processing and long-term storage, and developing data-driven predictive models by integrating existing knowledge. Overall, this review constructs a comprehensive framework for understanding the interfacial properties of high-fat dairy emulsions, providing actionable insights to advance product innovation and meet market demands for tailored dairy emulsion performance.
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