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1
tesis de grado
Evalua polifenoles, flavonoides, actividad antioxidante, anticolagenasa y antielastasa in vitro del extracto hidroalcohólico de sus tallos y hojas. Mediante pruebas fitoquímicas se identificaron polifenoles, flavonoides, triterpenoides, lactonas, glucósidos, antraquinonas y taninos. Los métodos de Folin-Ciocalteu y formación del complejo de flavonoides con tricloruro de aluminio, cuantificaron 5,7459 ± 0,0127 mg GAE/g y 86,7086 ± 0,0656 mg QE/g de compuestos fenólicos y flavonoides, respectivamente. En la medición de actividad antioxidante los resultados demostraron inhibición de radicales libres en los métodos DPPH•, ABTS•+, reducción del hierro férrico en el método FRAP (p<0,05) y se expresaron en capacidad antioxidante equivalente a trolox (TEAC-DPPH• y ABTS•+) y ácido ascórbico (AAEAC-FRAP), obteniéndose 31,2018 mg/g, 87,7822 mg/g y 315,3846 μmol AA/g de ext...
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artículo
Introduction. - The "nogal peruano" is a large tree distributed in several regions of Peru, mainly in areas of late secondary and mature forests. Species supplying antioxidant essential oils are considered valuable for health applications. Essential oils with various constituents show synergistic effects and can be an effective alternative to prevent diseases.Objectives. - To evaluate the chemical composition, antioxidant and anti-Candida albicans activity of the essential oil of Juglans neotropica Diels leaves.Materials and methods. - The essential oil was obtained by steam distillation. Its chemical composition was analyzed by GC-MS analysis and its antioxidant activity was evaluated according to DPPH• and ABTS•+ methods. In addition, its anti-Candida albicans activity was determined, adapting protocols, using ketoconazole as a reference. The oil was diluted in DMSO and incubated w...