Revista: | Brazilian journal of chemical engineering |
Base de datos: | PERIÓDICA |
Número de sistema: | 000308743 |
ISSN: | 0104-6632 |
Autors: | Baumann, W1 Rodrigues, S.V2 Viana, L. M3 |
Institucions: | 1Universitat Mainz, Institut fur Physikalische Chemie, Mainz, Rheinland-Pfalz. Alemania 2Universidade Federal Fluminense, Departamento de Quimica Analitica, Niteroi, Rio de Janeiro. Brasil 3Universidade Federal Fluminense, Departamento de Quimica Organica, Niteroi, Rio de Janeiro. Brasil |
Any: | 2000 |
Període: | Sep |
Volum: | 17 |
Número: | 3 |
Paginació: | 323-328 |
País: | Brasil |
Idioma: | Inglés |
Tipo de documento: | Artículo |
Enfoque: | Experimental, aplicado |
Resumen en inglés | A specially designed high-pressure cell was used simultaneously as extractor/autoclave and photometric cell in a Perkin Elmer Lambda 5 spectrophotometer. Based on this cell, a simple method was developed to determine the extractability of pigments by pure and by modified supercritical (sc) CO2. The method is demonstrated with curcumin from turmeric. With sc CO2 modified by 10% ethanol, the extraction yield for curcumin from two commercial finely ground dry turmeric samples was about 100%, measured by reference to the (complete) extraction of samples of the same charge with pure ethanol under standard conditions. Extractable curcumin content was from 1.8 to 2.5%, with three samples of turmeric of different origins |
Disciplines | Química |
Paraules clau: | Ingeniería química, Extracción supercrítica de fluídos, Celdas de alta presión, Curcumina, Dióxido de carbono |
Keyword: | Chemistry, Chemical engineering, Supercritical fluid extraction, High-pressure cells, Curcumin, Carbon dioxide |
Text complet: | Texto completo (Ver HTML) |