Tesis - Ingeniería en Agroindustrias

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Browsing Tesis - Ingeniería en Agroindustrias by Subject "ANÁLISIS NUTRICIONAL"

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    Caracterización nutricional y funcional de la harina precocida de amaranto ( amaranthus zelenaya sosulka).
    (Ecuador: Latacunga: Universidad Técnica de Cotopaxi (UTC), 2024-08) Tipantuña Mendoza, Kevin Fabián; Rojas Molina, Jaime Orlando
    Amaranth (Amaranthus Zelenaya Sosulka) is a pseudocereal grown in the Andean region, known for its high nutritional value in proteins. The main objective of this research work is to evaluate the nutritional and functional properties of precooked amaranth flour (Zelenaya Sosulka). The proximal chemical composition of the grain was evaluated, where 58.61% carbohydrate, 17.70% protein, 12.05% moisture, 6.92% fat, 1.97% fiber and 2.75% ash were obtained. Amaranth grain was precooked by humid heat, where temperature factors (110°C, 115°C and 120°C) and time (10 min, 20 min and 30 min) were used. In addition, the solubility of the flour and the protein content of the precooked grain were evaluated as response variables. For statistical treatment, the Desing Expert software was used, using an Optimal IV response surface design. The best combination for grain precooking was achieved at 115°C and 25 minutes, where 6.91% flour solubility and 13.38% protein were obtained. The nutritional analysis of the best flour combination reported 63.93% carbohydrate, 18.03% protein, 2.72% moisture, 7.14% fat, 2.11% fiber and 3.23% ash. Physical analyses showed hygroscopicity values of 1.365%, apparent density of 0.492 g/ml, compact density of 0.972 g/ml, angle of repose of 13.96°, Hausner index of 1.365. In addition, functional analyses of the run at 110°C for 10 minutes, gives a better response to the rheological properties, because it allows a greater development of the dough in the C1 phase and stability of the dough in the CS phase, improving the formation and stability of the dough, as well as an adequate retrogradation of the starch that contributes to the preservation of freshness in bakery products. These flours, having a high nutritional content, can be used as ingredients in fortified foods, and due to their functional characteristics they can be used as a component of bakery and pastry products.