| Revista: | Brazilian journal of chemical engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000309075 |
| ISSN: | 0104-6632 |
| Autores: | Santana, L.L.B1 Cardoso, L.A2 Druzian, J.I Souza, V.F Costa, T.A.C Nobrega, D.A Hohlemwerger, S.V.A Velozo, E.S |
| Instituciones: | 1Universidade Federal da Bahia, Faculdade de Farmacia, Salvador, Bahia. Brasil 2Universidade Federal da Bahia, Instituto de Quimica, Salvador, Bahia. Brasil |
| Año: | 2006 |
| Periodo: | Dic |
| Volumen: | 23 |
| Número: | 4 |
| Paginación: | 525-530 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | This work describes the conditions for selective extraction of the alkaloids in Andreadoxa flava (Kallunki). The experiments were performed in a pilot plant SFE 500, in the following conditions. Extractor pressures 206.8 x 10(5), 241.3 x 10(5), 275.8 x 10(5) and 310.3 x 10(5) Pascal and pressures of 137.9 x 10(5), 69.0 x 10(5) and 55.2 x 10(5) Pascal for separators 6, 7 and 8 respectively. The temperatures were 40 °C in the extractor and 20 ºC in the separators. The samples, extracted from A. flava leaves, were analysed by ¹H NMR and GC/FID as well as by comparison with standards. This procedure allowed the identification for the first time of the 2-quinolone alkaloid 8-methoxy-N-methyl-flindersine in A. flava leaves of the. In addition, zanthophylline, 5-methoxyalmene and 8-methoxyflindersine were identified as the main alkaloids in leaves. Under the best conditions for zanthophylline extraction it was possible to obtain a purity of 79.4% while with other phytochemical technique 55.5% was obtained |
| Disciplinas: | Química |
| Palabras clave: | Fitoquímica, Alcaloides, Extracción supercrítica, Dióxido de carbono, Quinolonas, Andreadoxa flava |
| Keyword: | Chemistry, Phytochemistry, Alkaloids, Supercritical extraction, Carbon dioxide, Quinolones, Andreadoxa flava |
| Texto completo: | Texto completo (Ver HTML) |
