Development and Characterization of Pistachio Yogurt: A Healthy, Sustainable, and Innovative Plant-Based Analog

Plant-based yogurts are increasingly recognized as sustainable and health-conscious alternatives to dairy-based products, driven by environmental, ethical, and nutritional motivations. Pistachio milk, derived from an efficient and resilient crop, emerges as a promising raw material for yogurt production, offering unique sensory qualities and a rich nutritional profile. Rich in unsaturated fatty acids, bioactive compounds, and essential nutrients, pistachios are ideal for fermentation with lactic acid bacteria (LAB). In this study, a novel pistachio-based yogurt was developed using lactic acid fermentation of pistachio milk, a nutrient-rich plant matrix known for its high content of unsaturated fatty acids, bioactive compounds, and essential nutrients. The production process was optimized to create an additive-free, clean-label formulation without the use of stabilizers or thickeners. The physicochemical, microbiological, and sensory properties of the yogurt were evaluated over refrigerated storage. The final product exhibited high levels of protein, fat, and total solids, along with desirable texture and flavor characteristics. Notably, pistachio yogurt showed significantly higher concentrations of free amino acids (FAA), particularly essential amino acids such as lysine, methionine, and tryptophan, compared to commercial soy and cow milk yogurts. This enhanced FAA profile contributes to the product’s functional and nutritional value. Sensory analysis revealed good consumer acceptance, with improvements in viscosity and firmness over time, likely due to microbial exopolysaccharide production. Overall, the findings highlight the feasibility and commercial potential of pistachio yogurt as a clean-label, plant-based fermented product that meets current consumer demands for sustainability, nutrition, and sensory quality