Abstract
The aim of this study was to evaluate the nutritional content and antioxidant capacity of the tubers, leaves and, flowers of the species Tropaeolum pentaphyllum Lam. The three parts of the plant were analyzed by physicochemical methods, atomic absorption spectrometry, spectrophotometric and chromatographic techniques. The tubers, leaves, and flowers exhibited significant differences in all parameters evaluated. The leaves showed significantly higher values of protein (16.28 ± 0.02 g/100 g), total dietary fiber (27.78 ± 0.15 g/100 g) and quercetin (3798.61 ± 37.57 µg/g) when compared to the tubers and flowers. The study revealed a potential content of the protein, dietary fiber, and flavonoids the species Tropaeolum pentaphyllum, when compared with the sweet potatoes leaves (Ipomoea batatas L.). In addition, the antioxidant activities of leaves and flowers were also higher measured by ABTS (2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid), DPPH (2,2-diphenyl-1-picrylhydrazyl), and TRAP (total radical-trapping antioxidant potential) methods. Tropaeolum pentaphyllum have high nutritional potential that can be exploited to improve nutritional value of various food products.
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The authors are grateful to the CNPq (National Scientific and Technological Development Council) and Capes (Coordinator for Upgrading Graduate-level Personnel) for the financial support.
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De Bona, G.S., Boschetti, W., Bortolin, R.C. et al. Characterization of dietary constituents and antioxidant capacity of Tropaeolum pentaphyllum Lam.. J Food Sci Technol 54, 3587–3597 (2017). https://doi.org/10.1007/s13197-017-2817-z
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DOI: https://doi.org/10.1007/s13197-017-2817-z