Browsing by Issue Date, starting with "2024-10-20"
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- Nutritional value and environmental footprint of muffins made with green-lentil flourPublication . Geraldo, Rafaela; Santos, Carla S.; Styles, David; Sousa, Sérgio; Pinto, Elisabete; Neves, Delminda; Vasconcelos, Marta W.The growing interest in environmentally friendly and protein-rich food choices has prompted the food industry to explore alternative protein sources. Lentils have garnered attention due to their versatile culinary applications and the range of health benefits associated with their nutritional composition. Furthermore, lentils offer an environmentally sustainable solution as they require fewer resources than animal protein sources. In this study, a new muffin recipe was developed, using high-polyphenol green lentil flour as a partial substitute for oatmeal flour. The main goal was to compare the lentil-based muffin's nutritional attributes with a muffin made exclusively from oatmeal flour, and to evaluate their environmental impact, using Life Cycle Assessment (LCA). Research on incorporating lentil flour into muffins, particularly considering its environmental impact is limited, highlighting the importance of this study. Regarding the results, compared with the oatmeal muffin, the lentil-based muffin exhibited improved nutritional properties, including a reduction in fat, an increase in protein, and fibre, and the presence of beneficial omega-3 fatty acids. The LCA revealed that the lentil-based muffin had a lower environmental impact across various categories than the oatmeal muffin. Overall, incorporating lentil flour into muffin recipes not only results in a gluten-free product but also enhances its overall nutritional profile and offers a sustainable alternative for environmentally conscious consumers. The study contributes to the expanding field of sustainable and nutritious food alternatives, providing valuable insights for both consumers and the food industry.
- Urine metabolomics during a legume diet intervention suggests altered metabolic signatures and potential new intake markers: first insightsPublication . Ferreira, Helena; Duarte, Daniela; Rodrigues, João A.; Vasconcelos, Marta W.; Pinto, Elisabete; Gil, Ana M.Given the general increase in legume consumption worldwide, there is a need to characterize the resulting human metabolic adaptations in order to demonstrate potential legume diet/health relationships. A nuclear magnetic resonance (NMR) metabolomics urine study was carried out on a small cohort (n = 18) to characterize the excretory effects of a pilot longitudinal 8-week legume-based dietary intervention. Despite the expected high interindividual variability in the excreted metabolome, the results suggested a nonlinear metabolic response, with higher metabolic activity in the first 4 weeks and a tendency toward baseline at the end of the intervention. The excretion of isoleucine, leucine, and threonine increased, along with metabolite changes suggestive of activation of the tricarboxylic acid cycle (through anaplerosis), ketogenesis, fat catabolism, and glycoprotein biosynthesis. Gut microbiota adaptations were also suggested based on the increased excretion of 2-hydroxyisobutyrate, allantoin, and hippurate. Increased levels of trigonelline were consistent with its role as a legume intake marker, whereas malonate and pseudouridine were suggested as possible additional markers. Correlation of NMR data with nutritional parameters aided putative explanatory hypotheses to be advanced. Our results suggest a dynamic response to legume consumption, mainly through increased amino acid excretion and altered energy metabolism, while advancing potential new markers of legume intake. These results require confirmation in larger cohorts but pave the way for an informed interpretation of the effects of legume-based diets on human health.