M. Russo et al., Experiences with solid CO2 concentration of bergamot cold-pressed essential oil (Citrus bergamia Risso), J ESSEN OIL, 13(4), 2001, pp. 247-249
Sublimation of solid CO2 selectively removed hydrocarbons from bergamot oil
. This result was achieved in a laboratory with very simple equipment. The
oil and dry ice were mixed in a cylindrical vessel and the gas stream entra
ined most of non-oxygenated terpenes. Their behavior is discussed briefly.