Pigments and their solubility in and extractability by supercritical CO2 - I: the case of curcumin
Document title: Pigments and their solubility in and extractability by supercritical CO2 - I: the case of curcumin
Journal: Brazilian journal of chemical engineering
Database: PERIÓDICA
System number: 000308743
ISSN: 0104-6632
Authors: 1
2
3
Institutions: 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
Year:
Season: Sep
Volumen: 17
Number: 3
Pages: 323-328
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract 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
Keyword: 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
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