Data/hora: 04/06/2024 18:03:52

Provedor de dados: | 64
País: | Brazil
Título: | Total antioxidant activity of yacon tubers cultivated in Brazil
Autores: | Pereira,Juciane Abreu Ribeiro; Teixeira,Meryene Carvalho; Saczk,Adelir Aparecida; Barcelos,Maria de Fátima Piccolo; Oliveira,Marcelo Firmino de; Abreu,Wilson César de.
Data: | 2016-10-01
Ano: | 2016
Palavras-chave: | Smallanthus sonchifolius; Total phenolics; Tannins; Phenolic acids.
Resumo: | ABSTRACT Yacon (Smallanthus sonchifolius) is a tuberous root from the Andean region in the South America rich em water, fructooligosaccharides and phenolic compounds, some of which are natural antioxidants and may help prevent the deleterious action of free radicals in the body. The yacon has attracted much attention due to their potential health benefits to humans. In this study the levels of total phenolics, tannins, phenolic acids, and total antioxidant activity were measured in the peel and pulp of yacon tubers both in the fresh and flour forms. The flours of yacon presented higher concentrations of total phenolics and tannins, especially peel flour. The yacon pulp flour stood out as the main source of phenolic acids, mainly caffeic and chlorogenic acid. The total antioxidant activity assessed by DPPH (2,2-Diphenyl-1-picrylhydrazyl) and ABTS (2,2′-Azino-bis (3-ethylbenzothiazoline-6-sulfonic acid)) assays was higher in the yacon peel flour. The total antioxidant activity was correlated with the total phenolic content and tannins by the DPPH and ABTS assays. These results suggest that yacon can be used as an alternative food source of phenolic compounds that help prevent degenerative processes caused by oxidative stress, especially in the flours form.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000500596
Editor: | Editora da Universidade Federal de Lavras
Relação: | 10.1590/1413-70542016405009416
Formato: | text/html
Fonte: | Ciência e Agrotecnologia  v.40 n.5 2016
Fonte: | info:eu-repo/semantics/openAccess