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http://hdl.handle.net/1843/51266| Tipo: | Artigo de Periódico |
| Título: | Miniaturized methodologies for determining the total phenol and flavonoid concentrations and the antioxidant activity |
| Autor(es): | Ane Patrícia Cacique Érica Soares Barbosa Gevany Paulino de Pinho Flaviano Oliveira Silvério |
| Resumo: | The present study describes the miniaturization of the conventional methodologies for determining the total phenol and flavonoid concentrations and the antioxidant activities using DPPH, ABTS, and ferric reducing antioxidant power (FRAP) methods. The amount of reagents used was reduced 25, 5.0, 3.6, 3.0, and 3.3 times relative to the conventional methodologies, representing a 67–96% reduction in the analysis costs. The miniaturized and conventional methodologies presented similar linearity in the same concentration range, with the determination and correlation coefficients greater than 0.99. The accuracy of the methodologies was evidenced by the relative standard deviations, which remained below 3%. The 38 samples comprising alcoholic beverages, teas, spices, jams, energy drinks, honey products, and grape derivatives analyzed using the two methodologies (miniaturized and conventional) presented similar average values. Therefore, the miniaturized methodology is proposed as an efficient, safe, and economical alternative to the conventional methods for determining the total phenol and flavonoid concentrations and the antioxidant activities using DPPH, ABTS, and FRAP methods in various matrices. |
| Assunto: | Fenóis Flavonóides Espectrofotometria |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Instituição: | UFMG |
| Departamento: | ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
| Tipo de Acesso: | Acesso Restrito |
| Identificador DOI: | https://doi.org/10.1007/s12161-020-01934-w |
| URI: | http://hdl.handle.net/1843/51266 |
| Data do documento: | 15-Jan-2021 |
| metadata.dc.url.externa: | https://link.springer.com/article/10.1007/s12161-020-01934-w |
| metadata.dc.relation.ispartof: | Food Analytical Methods |
| Aparece nas coleções: | Artigo de Periódico |
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