Plant-Based Fermented Beverages: Processing, Nutritional and Quality

Plant-based fermented beverages are heterogeneous food systems whose quality is determined by interactions among raw-material composition, pretreatment, microbial metabolism and storage conditions. Fermentation can improve acidification, flavour, texture, nutrient accessibility and selected antinutritional characteristics, but the magnitude and direction of these changes are matrix- and strain-specific. It should therefore be regarded as a controlled bioprocess rather than a universal solution to the limitations of plant-based foods. Cereal and millet matrices offer accessible carbohydrate and diverse fibre and phytochemical profiles but often require improvements in protein density, particle control and colloidal stability. Nut- and seed-based beverages can contribute protein and unsaturated lipids but demand careful management of fermentable sugars, oxidation, allergenicity and emulsion stability. Composite formulations offer a rational route to nutritional and technological complementarity, provided that interactions among ingredients are experimentally optimized. Future progress will depend on matrix-specific starter cultures, stronger process standardization, rigorous storage-stability studies, meaningful sensory evaluation, appropriate fortification and careful distinction between analytical indicators and demonstrated health effects. With these principles, fermented plant beverages can develop as scientifically designed foods with their own nutritional and sensory identity rather than as simple imitations of dairy products.

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