Abstract
A balanced and healthy diet entails the consumption of fruits since they are an important source of phytochemicals rich in vitamins–antioxidants. Therefore, identifying new fruits which can be included in the human diet is necessary. Miconia albicans (Sw.) Triana is a tall shrub native to the Brazilian savanna (“Cerrado”) that has not been consumed conventionally, but rather the vegetative material of this species has been widely recommended and consumed by humans as a part of traditional and herbal medicines. The fruits of M. albicans are consumed and dispersed by birds; however, previous studies have described bioaccumulation of aluminium in this species, which is reportedly toxic for humans. In order to evaluate the potential for human consumption of fruits from M. albicans, we characterized its physicochemical properties, including pH, moisture content, soluble solids, acidity, phenolic compounds, antioxidant capacity and mineral composition. We found high content of beneficial substances (calcium, zinc, magnesium, iron and antioxidants) in the fruits analysed. The aluminium concentration, however, is much higher than observed in other plants consumed by humans. The consumption of fruits M. albicans could impose potential risks of human health.
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Acknowledgements
The authors thank João Barbosa da Silva, for finding the plants and collecting the fruits, and Dr. Lucíola Santos Lannes, who inspired this study, when she warned us of the possible accumulation of aluminium in the fruits of Miconia albicans (Sw.) Triana that we consumed during our field work. We also thank the São Paulo Research Foundation—FAPESP, and G.D thanks the National Council of Scientific and Technological Development—CNPq, for the productivity grant (Grant # 303179/2016-3).
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PCP, IGB and ICFM were involved in laboratory determinations and interpretation of data. GD performed the field work. CWIH and LR analysed the data. All authors contributed to the writing and revision of the manuscript.
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Pasta, P.C., Durigan, G., Moraes, I.C.F. et al. Physicochemical properties, antioxidant potential and mineral content of Miconia albicans (Sw.) Triana: a fruit with high aluminium content. Braz. J. Bot 42, 209–216 (2019). https://doi.org/10.1007/s40415-019-00532-3
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DOI: https://doi.org/10.1007/s40415-019-00532-3