Optimization of the Supercritical Carbon Dioxide Separation of Bergapten from Bergamot Essential Oil.
J AOAC Int
; 101(1): 293-297, 2018 Jan 01.
Article
em En
| MEDLINE
| ID: mdl-28762330
ABSTRACT
The possibility of following traditional cold-press extraction with the post process continuous separation of bergapten from bergamot essential oil was investigated. A fractionation tower was used in an experiment in which cold-pressed bergamot oil was extracted in a continuous countercurrent process by supercritical carbon dioxide under different conditions. Bergapten is fairly soluble in CO2 in its supercritical phase, in particular at a density of 277.90 kgâ
m-3, corresponding to a pressure of 8 MPa and temperature of 40°C. Under these conditions, an extract with 0.198% bergapten was obtained, a figure slightly below the percentage of bergapten contained in cold-pressed oil (0.21%). However, at densities below 200 kgâ
m-3, the amount of bergapten in the extracted oil was negligible. Of all tested conditions for separation, the best was found to be at a pressure of 8 MPa and temperature of 70°C, conditions under which bergapten was not detected. The results of the experiment showed that bergapten, and the non-volatile fraction in general, was extracted only in small quantities and was not extracted at all with at a CO2 pressure of 8 MPa.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Óleos de Plantas
/
Óleos Voláteis
/
Dióxido de Carbono
/
Metoxaleno
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article