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Supercritical carbon dioxide in combination with silica gel to fractionate essential oils
Author(s) -
Bicchi Carlo,
Binello Arianna,
Rubiolo Patrizia
Publication year - 1999
Publication title -
phytochemical analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 72
eISSN - 1099-1565
pISSN - 0958-0344
DOI - 10.1002/(sici)1099-1565(199901/02)10:1<17::aid-pca429>3.0.co;2-k
Subject(s) - chemistry , supercritical carbon dioxide , essential oil , silica gel , supercritical fluid , tagetes , chromatography , elution , carbon dioxide , organic chemistry , botany , biology
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 × piperita L., Tagetes × lucida L. and Matricaria × chamomilla L. were processed. Copyright © 1999 John Wiley & Sons, Ltd.