| Revue: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000313389 |
| ISSN: | 0100-4042 |
| Autores: | Sousa, Cleyton Marcos de M1 Silva, Hilris Rocha e Vieira-Junior, Gerardo Magela Ayres, Mariane Cruz C Costa, Charllyton Luis S. da Araujo, Delton Servulo Cavalcante, Luis Carlos D Barros, Elcio Daniel S Araujo, Paulo Breitner de M Brandao, Marcela S Chaves, Mariana H |
| Instituciones: | 1Universidade Federal do Piaui, Departamento de Quimica, Teresina, Piaui. Brasil |
| Año: | 2007 |
| Periodo: | Abr |
| Volumen: | 30 |
| Número: | 2 |
| Paginación: | 351-355 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | This paper describes total phenolics content and antioxidant activity in the ethanolic extract of leaves, bark and roots of five medicinal plants: Terminalia brasiliensis Camb., Terminalia fagifolia Mart. & Zucc., Copernicia cerifera (Miller) H.E. Moore, Cenostigma macrophyllum Tul. var. acuminata Teles Freire and Qualea grandiflora Mart. The total phenolics content of the plant extracts, determined by the Folin-Ciocalteu method, varied from 250.0 ±8,2 to 763,63 ± 13.03 mg of gallic acid equivalent/g dry EtOH extract. The antioxidant activity of extracts was evaluated using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay system. Extract of bark from T. brasiliensis, the most active, with an EC50 value of 27.59 ± 0.82 µg/mL, was comparable to rutin (EC50 = 27.80 ± 1.38) and gallic acid (EC50 = 24.27 ± 0.31), used as positive controls. The relationship between total phenolic content and antioxidant activity was positive and significant for T. brasiliensis, C. macrophyllum and C. cerifera |
| Disciplinas: | Química |
| Palabras clave: | Fitoquímica, Plantas medicinales, Fenoles totales, Actividad antioxidante, Terminalia brasiliensis, Terminalia fagifolia, Copernicia cerifera, Cenostigma macrophyllum, Qualea grandiflora |
| Keyword: | Chemistry, Phytochemistry, Medicinal plants, Total phenols, Antioxidant activity, Terminalia brasiliensis, Terminalia fagifolia, Copernicia cerifera, Cenostigma macrophyllum, Qualea grandiflora |
| Texte intégral: | Texto completo (Ver HTML) |
