Unlocking the future of food with the new paradigm of plant-based proteins.

The global food system faces an unprecedented transformation, fuelled by the dual pressures of increasing consumer demand for high-protein diets, vital for metabolic health and muscle maintenance, and the critical environmental necessity to shift away from resource-intensive animal agriculture. This requires a systemic pivot toward sustainable plant-based proteins. While legumes and cereals offer compelling ecological and nutritional benefits, their widespread integration is significantly hindered by technological and sensory limitations; native plant protein structures often negatively impact the rheology of fortified cereals (weakening the gluten network) and lack the specific functional properties (e.g., coagulation, fibrillization, emulsification) required for high-fidelity meat, dairy, and seafood analogs. This review asserts that the next decade of food innovation will be defined by precision protein engineering. Future research must move beyond simple substitution to focus on the targeted modification of plant proteins using advanced enzymatic, physical, and biotechnological methods. This approach is essential to create high-performance, functional ingredients capable of achieving sensory parity with conventional products, eliminating off-flavors, securing superior textures (lamellarity in fish, meltability in cheese), and ensuring structural stability across diverse food matrices (acidic beverages, high-shear doughs). Crucially, this technological evolution must be coupled with rigorous verification of bioavailability and ecological transparency to fully deliver on the promise of a functional, accepted, and truly sustainable protein supply.