Antioxidant and antiproliferative activity of ethanolic and aqueous extracts from leaves and fruits juice Passiflora edulis

Johanny Aguillón Osma, María Elena Maldonado, Nelsy Loango Chamorro, Sandra Sulay Arango Varela, Patricia Landázuri

Resumen


Background: Extracts from a variety of fruit trees have been used for therapeutic applications for preventing oxidative stress associated to chronic diseases. Objective: To investigate the antioxidant and antiproliferative activity of ethanolic and aqueous extracts from leaves and fruits of Passiflora edulis. Materials and methods: A preliminary phytochemical screening was performed; antioxidant activity was evaluated through DPPH assay, the scavenging activity for hydroxyl radical, antihemolytic activity and total phenolic content; cytotoxic and antiproliferative activities were evaluated by MTT and sulforhodamine B assays respectively in colon adenocarcinoma SW480 cells and their metastatic-derived SW620 cells. Results: Phytochemical analyses revealed presence of tannins, flavonoids and cardiotonic glycosides. Ethanolic extract from leaves showed the best antioxidant activity (EC50 = 0.096 mg/ml) in the DPPH assay and the juice (EC50 = 0.022 mg/ml) for the Hydroxyl free radical-scavenging activity. All extracts inhibited more than 98% the hemolysis induced by H2 O2 . The aqueous extract from leaves showed the highest cytotoxic activity against SW480 and SW620 cells. Conclusions: Findings from this study suggest that P. edulis is a potential source of phytochemical compounds with antioxidant and antiproliferative properties.

Palabras clave


Passiflora edulis, antioxidante, antiproliferativo, citotóxico

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