Recent advances in plant protein microgels encapsulated with bioactive compounds

Abstract

Protein microgels and other novel food structuring methods have garnered attention to increase plant protein functionality. Microgels, small particles (0.5–5 μm) that trap a lot of solvent, are made of a three-dimensional network of cross-linked biopolymer molecules. Protein microgels exhibit structural adaptability that makes them excellent carriers for lipophilic bioactives, protecting them from degradation and instability in aqueous systems. Additionally, their tunable design allows controlled release, enhancing bioavailability and functional efficacy in food and nutraceutical applications. The integration of scientific advances with food technology positions plant protein-based microgels as transformative tools in developing sustainable, protein-rich, and functional plant-based food systems. These advances in protein microgels prompt this review of growing plant protein sources, microgel formation, stabilization technologies, encapsulation with bioactive compounds, bioactive component transport, focusing on their functional properties, structural features, and applications. Knowing these trends can help us understand how sustainable, functioning food systems will emerge and solve global environmental and nutritional challenges.