Facultad de Ciencias Básicas

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Determinación del contenido de compuestos fenólicos y actividad antioxidante del extracto etanol/acuoso de la pulpa de arazá (Eugenia stipitata)
(Universidad Santiago de Cali, 2025) Peña Ardila, Leidy Carolina; Montenegro Mora, Estefanía; Castillo Ayala, Jorge Enrique (Director)
The objective of this work is to determine the antioxidant capacity of the phenolic compounds present in the pulp of arazá (Eugenia spititata Mc Vaugh), for this the extraction of bioactive compounds was carried out in three different media (aqueous, hydroethanolic 50:50 , ethanolic) in which a yield percentage of 2.9%, 3.5%, 3.3% respectively was obtained. Next, a phytochemical test was carried out to qualitatively identify the presence of bioactive compounds present in the extracts. Subsequently, the content of phenolic compounds was quantified by the folin-Ciocalteu method for each of the extracts taking gallic acid as a reference standard, where it was observed that the ethanolic extract had a higher content of phenolic compounds with a value of 506 .2500 equivalents in mg/L of gallic acid (GAE) in the extract. Finally, the antioxidant capacity of each of the extracts was evaluated by the ABTS method, resulting in an inhibitory concentration of 50 (IC50) for the ethanolic extract of 10.01mg/L, the hydroethanolic extract of 16.65mg/L, and finally the aqueous of 19.11mg/L, these results were compared with the reference standard and the antioxidant capacity equivalent to Trolox was calculated.