Concentración sucesivas de compuestos fenólicos de la Yerba Mate (Ilex paraguariensis) y su contribución a la capacidad antioxidante

Contenido principal del artículo

Maria Marcela Brousse
Ana B. Monaca
Gabriela G. López
Nancy E. Cruz
María L. Vergara

Resumen

Se realizaron cuatro concentraciones sucesivas de extractos de yerba mate a 30, 50 y 70 °C, agregando yerba mate nueva al inicio de cada concentración. Se evaluó el contenido de compuestos fenólicos totales (CFT) con el método de Folin-Ciocalteu y la capacidad antioxidante (CAO) con el ensayo del radical libre DPPH (2,2-diphenyl-1-picrylhydrazyl). Nuestros resultados mostraron que el CFT se incrementó significativamente con el aumento de la temperatura, mientras que la CAO disminuyó (p<0.05). El CFT extraído fue máximo a 70 °C, obteniéndose un valor de 38,06 ± 1,56 g EAG/L, y para 30 °C se obtuvo 25,50 ± 0,14 g EAG/L. La CAO mostró una tendencia decreciente con el aumento de la temperatura, obteniéndose valores desde 94,39 ± 0,65 g EAA/L para 30 °C, hasta 52,53 ± 0,09 g EAA/L para 70 °C. En los extractos concentrados cuatro veces los valores fueron (39,33 ± 6,71) % (CFT) y (28,48 ± 0,99) % (CAO), superiores que en los extractos sin concentrar. Concluimos que la técnica de extracciones sucesivas proporciona, al aumentar el número de extracciones, una forma eficaz de producir extractos ricos en polifenoles y alta capacidad antioxidante usando temperaturas moderadas durante el proceso de extracción, evitando la degradación térmica del extracto.

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Brousse, M. M., Monaca, A. B., López, G. G., Cruz, N. E., & Vergara, M. L. (2024). Concentración sucesivas de compuestos fenólicos de la Yerba Mate (Ilex paraguariensis) y su contribución a la capacidad antioxidante. Revista De Ciencia Y Tecnología, 42(1), 18–27. https://doi.org/10.36995/j.recyt.2024.42.002
Sección
Ingeniería, Tecnología e Informática
Recibido 2024-05-17
Aceptado 2024-08-01
Publicado 2024-12-10

Citas

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