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Quinoa (Chenopodium quinoa) is an important pseudocereal for its high nutritional value, versatility in cooking, gluten-free nature, and potential contribution to food security and sustainable agriculture. The aim of this work was to evaluate the effect of different levels of substitution (10, 20, and 30%) of hydrolyzed quinoa flour (HQF) on the nutritional, physical, and antioxidant characteristics and protein digestibility of cookies elaborated with wheat and broad bean flours. Cookies without HQF were the control (C0). The addition of HQF increased the protein content by between 12 and 68% compared to C0. The increase in HQF improved the cookies’ quality according to the spread ratio. Adding HQF resulted in more compact cookies, decreasing their specific volume (1.30 to 1.15 cm³/g) and increasing their hardness (2791 to 6515 g). The total polyphenols increased by 2 to 3 times, and the antioxidant activity increased by more than three times with a 30% addition of HQF with respect to C0. The oxygen radical absorbance capacity with fluoresceine (ORAC-FL) index (stoichiometry or amount of antioxidants) revealed that up to a 20% and 30% addition of HQF increased the antioxidant compounds by up to ~1.5 times. On the other hand, the antioxidant reactivity, according to the oxygen radical absorbance capacity with pyrogallol red (ORAC-PGR) index, increased by 2.4 times with a 30% addition of HQF. Finally, the cookies’ digestibility improved with a 10% addition of HQF. Therefore, HQF represents a viable option in the development of cookies with highly reactive antioxidant compounds that are nutritionally improved. This application could be extended to other baked products. However, a 30% addition of HQF affects its textural properties and decreases its digestibility. Full article

In sports nutrition, protein intake is essential to stimulate protein synthesis and repair muscle damage caused by exercise. The search for non-traditional protein sources has increased in recent years. Quinoa (Chenopodium quinoa Wild) and broad beans (Vicia faba L.) grains could be used in the production of protein products. Broad beans are an introduced and widely expanded crop in South America; it is part of the Argentine Northwest Andean population diet. The aim of this work was to evaluate the functional and nutritional properties of hydrolyzed quinoa (HQF) and broad bean (HBF) flours for their use in the elaboration of protein foods for athletes. Both hydrolyzed flours were obtained using Flavourzyme at 50 °C and pH 8 for 3 and 1 h, respectively. HQF presented a higher degree of hydrolysis (21.79%), while HBF had higher protein content (57.31%), yield (32.14%), and protein recovery (71.31%). In HBF and HQF, Na and K were the most abundant minerals, both necessary for the replacement of electrolytes lost during physical training. HBF and HQF presented 5909.63 and 2708.91 mg/100 g of properties, respectively, and HQF presented higher emulsifying branched amino acids content, essential in sports nutrition. Regarding technological activity (61.30 m²/g), stability indexes (158.6 min), and foaming capacity (131%); HBF shows a wider range of solubility in function of pH, and good foaming stability (68–92%). These results indicate that HQF and HBF could be potential ingredients for athletes’ protein supplements formulation. Full article