Volta

Sustainable proteins for future food systems: nutritional quality, environmental trade-offs, and consumer acceptance

The global food system is under growing strain to deliver sufficient high-quality protein for a rising population, while curbing environmental degradation, tackling climate change, and maintaining long-term food security. Conventional livestock production is a major source of greenhouse gas emissions, excessive land and water use, and biodiversity loss, which has boosted demand for sustainable alternative proteins such as plant-based, microbial, algal, insect, fermented, and cultivated meat products. This multidisciplinary review comprehensively assesses these emerging protein sources across nutrition, environmental performance, and consumer acceptance. It evaluates their amino acid composition, protein digestibility, micronutrient density, and health effects, and quantifies their environmental impacts using life cycle assessment indicators. Noticeable trade-offs in processing intensity, energy consumption, and production scalability are also discussed. Key …

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