Uma abordagem sobre métodos analíticos para determinação da atividade antioxidante em produtos naturais
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Data
2011
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Resumo
Antioxidants have been placing a highlighted position in the pharmaceutical industry,
becoming the systematic research of these compounds important, for their ability to
neutralize harmful agents in biological systems such as free radicals. In this work
were evaluated some methodologies to determine the antioxidant capacity of some
complex systems, as plant extracts, food, wine, among others. The detection of
antioxidants was based on three categories of methods: electrochemical, colorimetric
(DPPH e ABTS), and biological. Besides these, other instrumental techniques were
pointed out, showing the versatility of the mechanisms that can be use to unveil the
concentration of these substances. The HPLC (High Performance Liquid
Chromatography) is a very useful tool in the identification and quantification of these
compounds and can be coupled to the DPPH method. Each analytical method cited
here has advantages and limitations, and the approach presented in this work ranges
within these two parameters.
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Palavras-chave
Antioxidantes, CLAE, Radicais livres, DPPH, ABTS, Antioxidants, Free radicals, ABTS, DPPH, HPLC, Introdução
Citação
BORGES, Leonardo Luiz et al. Uma abordagem sobre métodos analíticos para determinação da atividade antioxidante em produtos naturais. Enciclopédia Biosfera, Goiânia v. 7, n. 12, p. 1-12, 2011.