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- Title
Conteúdo fenólico e atividade antioxidante de diferentes cultivares de ipomoea batatas (l.) lam. obtidas por melhoramento genético para produção industrial de etanol.
- Authors
Mendes Soares, Ilsamar; Pereira Bastos, Ernane Gerre; da Silva Peixoto Sobrinho, Tadeu José; da Costa Alvim, Tarso; da Silveira, Márcio Antônio; de Souza Aguiar, Raimundo Wagner; Donizeti Ascêncio, Sérgio
- Abstract
The sweet potato (Ipomoea batatas (L.) Lam) is a vegetable native to tropical America, now a prominent crop in all parts of the world. The main purpose of cultivating this plant is to produce roots for human and domestic animal consumption and ethanol production. The preferred part of I. batatas is the roots, so that the shoot is generally discarded or used as animal feed. The aim of this study was to determine the total phenolic content, the chromatographic profile and the antioxidant potential of the leaves of 10 cultivars of I. batatas developed by conventional breeding for the industrial production of ethanol. Ethanol extracts of the leaves of mature plants were assayed for phenolic contents by The Folin-Ciocalteu method, which ranged between 54.72 ± 4.35 and 112.29 ± 3.65 mg TAE/g, for flavonoids by complexation with aluminum chloride (29.15 ± 372 to 97.36 ± 2.13 mg RE/g), for in vitro antioxidant activity by the DPPH FRAP methods and for chelating activity. Additionally, the phenolic compounds were investigated by thin layer chromatography (TLC) and high performance liquid chromatography (HPLC), revealing a complex matrix of compounds comprising various flavonoids and ellagic acid. A high antioxidant potential was found, which was satisfactorily correlated by Pearson correlation with total phenolic and flavonoid contents. The results showed a great potential for adding value to the crop of I. batatas, by combining the current agro-energy practice based on its roots with the exploitation of other organic commodities present in its leaves.
- Publication
Revista de Ciências Farmacêuticas Básica e Aplicada, 2014, Vol 35, Issue 3, p479
- ISSN
1808-4532
- Publication type
Article