Antioxidant activity of aqueous extract of passion fruit (Passiflora edulis) leaves: In vitro and in vivo study

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Passion fruit (Passiflora edulis), including its leaves, is a rich source of bioactive compounds, as polyphenols. This study investigated the in vitro and in vivo antioxidant potential of aqueous extract of P. edulis leaves and identification of phenolic compounds by HPLC-PDA and ESI-MS/MS analysis. Male Wistar rats were divided in two groups (n = 6 per group). Control group received water and experimental group received P. edulis leaf extract (Tea) (1.1 mg dry leaves mL(-1)), both ad libitum. Total phenols and antioxidant potential (DPPH, FRAP, ABTS and ORAC assay) were determined in aqueous extract. Antioxidant status was analyzed by FRAP, ORAC in serum and by SOD, GR and GPx activities, GSH contents and TBARS in liver, brain and kidneys. Gut microbiota profile and short-chain fatty acids were determined in feces. Vitexin, isovitexin and isoorientin were analyzed in the extract of P. edulis leaves. The animals which received tea showed a decrease of 20% of TBARS in liver. GSH contents in kidneys increased 40% relative to control group. The GR activity was 2 times higher and GPx 3.2 times lower in liver than control group. Animals from TEA group showed a 45% reduction on SOD activities in liver and brain. Serum antioxidant potential was not altered. Tea intake also promoted colonic bacteria growth, although there was a decreasing in the SCFA production. Therefore, P. edulis leaf extract could be an option to enhance the supply of antioxidants and to safeguard against oxidative stress. (C) 2013 Elsevier Ltd. All rights reserved.532SI882890Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Yellow passion fruit seed oil (Passiflora edulis f. flavicarpa): physical and chemical characteristics

The aim of this study was to determine the chemical composition -physico-chemical properties, fatty acid and tocopherol compositions and total phenolic compounds -and evaluate the radical-scavenging activity of crude oil extracted from passion fruit (Passiflora edulis f. flavicarpa) seeds, aiming to use the agro-industrial by-products. The oil seed extraction was performed by Soxhlet method and the oil yield from the seeds was 30.39%. The oil showed high levels of unsaturated fatty acids (87.59%), including mainly linoleic (73.14%) and oleic (13.83%) acids, tocopherol (499.30 mg/kg) and phenolic compounds (1,314.13 mg GAE/kg). The physico-chemical characteristics were similar to those of other edible oils and the oil showed significant antioxidant activity. Therefore, the potential utilization of the passion fruit seed oil as a raw material for food, chemical and pharmaceutical industries could be favorable