The aim of the present study was to develop a fermented pistachio beverage as a plant-based alternative to milk-based drinks. For this purpose, a colloidal mill was used to finely grind and homogenize the pistachios to obtain a homogeneous consistency and prevent sedimentation. In addition, lactic acid bacteria fermentation was used to develop unique flavours and characteristics in the final product and to achieve microbiological stability for up to 30 days of storage a 4 °C. The formulated beverages were evaluated for chemical–physical characteristics (pH, organic acid production, and fructose, sucrose, and glucose content), nutritional profile (proximate composition, amino acid and GABA content), and volatile organic composition by HS-SPME-GC/MS analysis. The pistachio-based beverages were characterized by a good source of protein, fat, fiber, and minerals (mainly K and P). The colloidal mill contributed to creating a homogeneous texture and to making the nutrients readily available to the starter microorganisms, which reached concentrations above 10⁸ ufc/mL in the final products. The beverages were characterized by pronounced acidity and some by the presence of acetoin and 2,3-butanedione, volatile components associated with a yogurt- or kefir-like aroma. This innovative approach provides an alternative to traditional milk-based beverages and highlights the role of LAB in the development of nutritious and attractive plant-based beverages.

Baking leavening agents and fermentation conditions may influence the gastrointestinal fate of nutrients in baked goods, thereby affecting their bioavailability. This study aimed to evaluate the digestibility of sourdough pizza fermented with lactic acid bacteria species (Levilactobacillus brevis, Fructilactobacillus sanfranciscensis, Leuconostoc pseudomesenteroides) and yeast, compared to traditional pizza fermented with baker′s yeast. The effects of leavening time (up to 48 h) and microbial leavening agents on the nutritional profile and digestibility of baked pizzas were investigated by examining the microbiological and physico-chemical changes in the doughs, with a particular focus on the sugar content. Additionally, the degree of protein hydrolysis and the levels of FODMAPs (fermentable oligosaccharides, disaccharides, monosaccharides, and polyols) were quantified on the cooked pizzas both before and after in vitro gastrointestinal digestion. In vitro protein digestibility was not significantly influenced by the type of microbial leavening agent used or fermentation time. However, extended fermentation, particularly with lactic acid bacteria sourdough, resulted in a notable decrease in FODMAPs, thereby enhancing the digestibility and overall health profile of the pizza for individuals sensitive to these compounds. Future research should further explore the mechanisms behind these changes and their implications for dietary recommendations.

The search for bioactivities influencing the human wellbeing of food proteins and peptides is a topic of broad and current interest. γ-Conglutin (γC) is a lupin seed protein drawing remarkable pharmacological and/or nutraceutical interest, as it is able to reduce hyperglycemia in humans and animal models. The present work deepens our investigations to understand the molecular basis of the in vitro effects of γC by testing the possible metabolic effects on cultivated Caco-2 cells. γC and its derived peptides (obtained via simulated gastrointestinal digestion) did not influence the cell viability at incubation times up to 24 h. The incubation of cells with native or digested γC caused no detectable inflammation processes mediated by Nuclear Factor kappa B (NFκB). We checked if treatment with γC or its derived peptides can elicit the expression of two peptide transporters (Pept-1 and Htp-1) by using an RT-qPCR approach. Native γC caused the halving of Pept-1 expression compared to untreated cells, but this effect disappeared when γC was digested. Either native γC or γC peptides reduced the expression levels of Hpt-1. Finally, this work also sheds light on the possible structural modifications of γC that may occur in the gastrointestinal tract, using an in vitro simulated dispersed system with polystyrene nanoparticles (NPs).

Eosinophilic esophagitis (EoE) is an emerging disease characterized by chronic inflammation of the esophagus. EoE is a multifactorial disorder, likely resulting from the combination of genetic predisposition, epithelial barrier dysfunction, environmental risk factors, and allergen sensitization, which lead to type 2 inflammation of the esophagus. The clinical manifestations are related to esophageal dysfunction and include dysphagia, food impaction, heartburn, regurgitation, and food refusal. These symptoms are sometimes superimposable and can often be confused with the symptoms of gastroesophageal reflux disease. To-date, EoE diagnosis relies on endoscopic examination and histological analysis of esophageal biopsies, with the diagnostic criterion defined as the presence of ≥15 eosinophils per high-power field (eos/HPF). As a result, both the diagnostic and the subsequent disease monitoring processes, including assessment of treatment, efficacy, and remission status, require repeated endoscopic procedures. These procedures are rather invasive for patients, particularly in the pediatric population, and impose a significant financial strain on healthcare systems. Therefore, in recent years, substantial efforts have been made to identify novel non-invasive or minimally invasive biomarkers. This review aims at synthesizing the current findings and at categorizing the most promising biomarkers according to the different biological sources to ultimately enable earlier detection, reduce patient discomfort, and guide personalized treatment strategies.