Research Progress of Food-Grade High Internal Phase Pickering Emulsions and Their Application in 3D Printing

Author:

Wu Chao,Liu Zhe,Zhi Lanyi,Jiao Bo,Tian Yanjie,Liu Hongzhi,Hu Hui,Ma Xiaojie,Pignitter MarcORCID,Wang Qiang,Shi AiminORCID

Abstract

High internal phase Pickering emulsion (HIPPE) is a type of emulsion stabilized by solid particles irreversibly adsorbed on an interfacial film, and the volume fraction of the dispersed phase (Φ) is larger than the maximum packing volume fraction (Φmax). Proteins, polysaccharides, and their composite particles can be used as good particle stabilizers. The contact angle can most intuitively demonstrate the hydrophilicity and hydrophobicity of the particles and also determines the type of emulsions (O/W or W/O type). Particles’ three-phase contact angles can be adjusted to about 90° by compounding or modification, which is more conducive to emulsion stability. As a shear thinning pseudoplastic fluid, HIPPE can be extruded smoothly through 3D printer nozzles, and its high storage modulus can support the structure of printed products. There is huge potential for future applications in 3D printing of food. This work reviewed the biomacromolecules that can be used to stabilize food-grade HIPPE, the stabilization mechanism of the emulsions, and the research progress of food 3D printing to provide a reference for the development of advanced food products based on HIPPE.

Funder

National Natural Science Foundation of China

Central Public-interest Scientific Institution Basal Research Fund

Publisher

MDPI AG

Subject

General Materials Science,General Chemical Engineering

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