Abstract
Passiflora edulis fo. flavicarpa (Passifloraceae) is popularly known as yellow passion fruit and its fruit peels are considered a rich by-product in bioactive compounds which has greatly beneficial health properties. The objective of this study was to evaluate the effects of P. edulis fruit peel extracts in a type 1 diabetes model and the potential vasorelaxant effect. The aqueous and hydroethanolic extracts were obtained from P. edulis fruit peels and orientin and isorientin flavonoids were identified in both extracts through ultra-high performance liquid chromatography. Pectin was only identified in the aqueous extract by high-performance steric exclusion chromatography and nuclear magnetic resonance. Regarding the vascular system, the hydroethanolic extract showed better vasorelaxant effects in the mesenteric artery rings when compared to the aqueous extract. These effects mainly occur by opening the potassium channels. In the type 1 diabetes model, extracts at doses of 400 and 600 mg/kg were able to restore the effect of insulin in diabetic rats which were not responding to its action. The antidiabetic effect was more significant for the aqueous extract. Thus, the results suggest that the hydroethanolic and aqueous extracts have greater potential to be used to treat cardiovascular diseases such as hypertension and as a hypoglycemic agent, respectively. Taken together, P. edulis fruit peel extracts proved to be a source of valuable bioactive raw material to produce nutraceuticals or pharmaceutical products.
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Acknowledgements
The authors are grateful to the CAPES for the PhD scholarship (88882.375434/2019-01)
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The research was funded by the Brazilian research funding agencies: Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES). SZ is a research productivity fellow of the CNPq (Grant number 313727/2020–1).
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All authors contributed to the performance of the review. The literature search and writing were done by Bárbara Cabral; supervision and literature advice were performed by Raul Hernandes Bortolin; Tays Amanda Felisberto Gonçalves; Alinne Villar de Arruda; Thais Gomes de Carvalho; Kahlile Youssef Abboud and Jovelina Samara Ferreira Alves; the critical and final revision was done by Silvana Maria Zucolotto; Adriana Augusto de Rezende; Isac Almeida de Medeiros and Lucimara M.C. Cordeiro.
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Cabral, B., Bortolin, R.H., Gonçalves, T.A.F. et al. Hypoglycemic and Vasorelaxant Effect of Passiflora edulis Fruit Peel By-Product. Plant Foods Hum Nutr 76, 466–471 (2021). https://doi.org/10.1007/s11130-021-00921-8
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DOI: https://doi.org/10.1007/s11130-021-00921-8