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Comparative analysis of the oil and supercritical CO2 extract of ferula communis L. / Bruno Marongiu in The journal of essential oil research, Vol. 17 N° 2 (Mars-Avril 2005) 

Public ISBD [article]  in The journal of essential oil research > Vol. 17 N° 2 (Mars-Avril 2005) . - pp. 150-152 Titre : Comparative analysis of the oil and supercritical CO2 extract of ferula communis L. Type de document : texte imprimé Auteurs : Bruno Marongiu, Auteur ; Alessandra Piras, Auteur ; Silvia Porcedda, Auteur Année de publication : 2006 Article en page(s) : pp. 150-152 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Ferula  communis  Apiaceae  Essential  oil  composition  Supercritical  carbon  dioxide  extract  composition Résumé : Flowerheads of Ferula communis L. were used for supercritical extraction with carbon dioxide to isolate the corresponding volatile concentrate. It was isolated by supercritical CO2 extraction coupled to a fractional separation technique. The process was carried out operating at 100 bar and 50°C in the extraction vessel, at 100 bar and below −5°C in the fi rst separator to selectively precipitate the cuticular waxes and at a pressure between 15 and 20 bar and temperatures in the range of 15°-21°C in the second separator to recover the volatiles. GC/MS analysis of the extract allowed the identification of the volatile concentrate composition. The main constituents in the extract were α-gurjunene, β-gurjunene, α-selinene and β-selinene. A comparison with the oil obtained by hydrodistillation is also given. The differences observed between the composition of the SFE volatile concentrate and of the hydrodistilled oil were relevant. Indeed, the HD oil had a blue color due to presence of chamazulene, whereas the volatile concentrate was pale yellow. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698861 [article] Comparative analysis of the oil and supercritical CO2 extract of ferula communis L. [texte imprimé] / Bruno Marongiu, Auteur ; Alessandra Piras, Auteur ; Silvia Porcedda, Auteur . - 2006 . - pp. 150-152. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 2 (Mars-Avril 2005) . - pp. 150-152 Mots-clés : Ferula  communis  Apiaceae  Essential  oil  composition  Supercritical  carbon  dioxide  extract  composition Résumé : Flowerheads of Ferula communis L. were used for supercritical extraction with carbon dioxide to isolate the corresponding volatile concentrate. It was isolated by supercritical CO2 extraction coupled to a fractional separation technique. The process was carried out operating at 100 bar and 50°C in the extraction vessel, at 100 bar and below −5°C in the fi rst separator to selectively precipitate the cuticular waxes and at a pressure between 15 and 20 bar and temperatures in the range of 15°-21°C in the second separator to recover the volatiles. GC/MS analysis of the extract allowed the identification of the volatile concentrate composition. The main constituents in the extract were α-gurjunene, β-gurjunene, α-selinene and β-selinene. A comparison with the oil obtained by hydrodistillation is also given. The differences observed between the composition of the SFE volatile concentrate and of the hydrodistilled oil were relevant. Indeed, the HD oil had a blue color due to presence of chamazulene, whereas the volatile concentrate was pale yellow. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698861