Isolation of eucalyptus oil by supercritical fluid extraction

✍ Scribed by G. Della Porta; S. Porcedda; B. Marongiu; E. Reverchon

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 96 KB
• Volume: 14
• Category: Article
• ISSN: 0882-5734
• DOI: 10.1002/(sici)1099-1026(199907/08)14:4<214::aid-ffj814>3.0.co;2-h

✦ Synopsis

Eucalyptus volatile oil was isolated by supercritical CO 2 extraction with a fractional separation technique. GC±MS analysis of the various fractions obtained at dierent extraction and fractionation conditions allowed the identi®cation of the best operating conditions to isolate the volatile oil. A good extraction performance was obtained by operating at 90 bar and 508C for 510 min. The optimum fractionation was achieved by operating at 90 bar and À108C in the ®rst separator and at 15 bar and 158C in the second one. The in¯uence of the extraction pressure and of the extraction time on the oil composition were also evaluated. A comparison with the hydrodistilled oil is also given.