Fermentation's pivotal role in shaping the future of plant-based foods: An integrative review of fermentation processes and their impact on sensory and health benefits

Given the environmental, ethical, and food security challenges posed by conventional agriculture and animal husbandry, the transition towards sustainable food systems is essential. Plant-based foods, especially those enhanced by fermentation, present a viable solution. Fermentation reduces the ecological footprint, aligns with ethical standards, and enhances plant-based proteins’ nutritional value and sensory attributes, offering a credible alternative to animal products. This paper explores fermentation's transformative role in developing plant-based meats, dairy, and protein alternatives, emphasizing its benefits, including improved gut health through probiotics and prebiotics. It also addresses challenges such as producing undesirable by-products, potential health risks, and the increased costs associated with fermentation. Detailed examinations of specific fermentation processes—alcoholic, lactic acid, acetic acid, propionic acid, and butyric acid—and their impact on enhancing the nutritional value, digestibility, and flavor of plant-based foods are presented. Case studies from pioneering plant-based food companies demonstrate fermentation technologies’ practical applications and market potential. Lastly, the paper discusses future challenges and opportunities in scaling up fermentation processes and incorporating advanced biotechnological techniques to further enhance food sustainability and health outcomes.