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evaluation of the antioxidant capacity of quercetin derived of natural extract from red onion ocañera (allilium strain l) and red apple (pyrus malus l var. red delicius) in palm oil refined industrial type continuous warm conditionsEvaluación de la capacidad antioxidante de la quercetina a partir del extracto natural de cebolla roja ocañera (allilium cepa l) y manzana roja (pyrus malus l var. red delicius) en aceite de palma refinado tipo industrial en condiciones de calentamient
(Universidad Nacional Abierta y a Distancia, UNAD, 2010-05-08)
The research was based on the assessment of the quercetin antioxidant capacity existing in red apple (Pyrus malus L var. red delicious) and ocañera red onion (Allilium cepa L). Then, antioxidant concentration was calculated by a standard curve of commercial quercetin (HPLC concentration ≥98%) using spectrophotometry at 415 nm and dropped concentrations of 0.0955 mg/g in onion extract and 0.0144mg/g in apple extract. ...