Supercritical carbon dioxide in combination with silica gel to fractionate essential oils
✍ Scribed by Carlo Bicchi; Arianna Binello; Patrizia Rubiolo
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 74 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0958-0344
No coin nor oath required. For personal study only.
✦ Synopsis
Supercritical fluids have high selectivity thanks to the fact that their solvating power can be varied either physically or chemically. Supercritical carbon dioxide (SC CO 2 ) in combination with silica gel can successfully be applied to fractionate essential oils. By modifying the elution strength of SC CO 2 through its density, several essential oils were fractionated, and it was possible to separate compounds of very similar polarity into different fractions. In particular, the essential oils of Mentha x piperita L., Tagetes x lucida L. and Matricaria x chamomilla L. were processed.