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Use este identificador para citar ou linkar para este item: https://repositorio.ufba.br/handle/ri/6985
Tipo: Artigo de Periódico
Título: Selectivity in the Extraction of 2-Quinolone Alkaloids With Supercritical Co2
Título(s) alternativo(s): Brazilian Journal of Chemical Engineering
Autor(es): Santana, Lourenço Luis Botelho de
Cardoso, Lafaiete Almeida
Druzian, Janice Izabel
Souza, Verônica Ferreira de
Costa, Tadeu Antônio de Campos
Nóbrega, D. A.
Hohlemwerger, S. V. A.
Velozo, Eudes da Silva
Autor(es): Santana, Lourenço Luis Botelho de
Cardoso, Lafaiete Almeida
Druzian, Janice Izabel
Souza, Verônica Ferreira de
Costa, Tadeu Antônio de Campos
Nóbrega, D. A.
Hohlemwerger, S. V. A.
Velozo, Eudes da Silva
Abstract: 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 105, 241.3 x 105, 275.8 x 105 and 310.3 x 105 Pascal and pressures of 137.9 x 105, 69.0 x 105 and 55.2 x 105 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.
Palavras-chave: Supercritical CO2 extraction
Alkaloids
2-quinolone
Andreadoxa flava
Editora / Evento / Instituição: Brazilian Journal of Chemical Engineering
URI: http://www.repositorio.ufba.br/ri/handle/ri/6985
Data do documento: 2006
Aparece nas coleções:Artigo Publicado em Periódico (FAR)

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