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Response surface method applied to supercritical carbon dioxide extraction of Vetiveria zizanioides essential oil / Luu Thai Danh in Chemical engineering journal, Vol. 155 N° 3 (Decembre 2009) 

Public ISBD [article]  in Chemical engineering journal > Vol. 155 N° 3 (Decembre 2009) . - pp. 617-626 Titre : Response surface method applied to supercritical carbon dioxide extraction of Vetiveria zizanioides essential oil Type de document : texte imprimé Auteurs : Luu Thai Danh, Auteur ; Raffaella Mammucari, Auteur ; Paul Truong, Auteur Année de publication : 2010 Article en page(s) : pp. 617-626 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Supercritical  carbon  dioxide  extraction  Vetiver  essential  oil  Response  surface  metho  Khuismol  Zizanoic  acid Index. décimale : 660 Résumé : Three operating parameters of supercritical carbon dioxide extraction (SCE) have been optimized by a response surface method using central composite design to obtain high yields of essential oil from roots of Vetiveria zizanioides. Analyses by multiple regression indicated that pressure has a major linear effect on oil yield, whilst temperature and time have a lesser impact. However, the effect of temperature in combination with pressure is significant. Overall, extraction yields increase with both pressure and temperature. The optimal SCE yield (1.38%) obtained at the operating conditions of 190 bar, 50 °C and 100 min was about four times higher than that achieved by hydro-distillation. In general, the quality of vetiver oil extracted by SCE is suitable for the food industry. In order for the SCE extracts to be acceptable in the perfumery industry, however, a high yield of vetiver oil would be required in association with high khusimol and low zizanoic acid contents. DEWEY : 660 ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4X315MJ-1&_user=6 [...] [article] Response surface method applied to supercritical carbon dioxide extraction of Vetiveria zizanioides essential oil [texte imprimé] / Luu Thai Danh, Auteur ; Raffaella Mammucari, Auteur ; Paul Truong, Auteur . - 2010 . - pp. 617-626. Génie Chimique Langues : Anglais (eng) in Chemical engineering journal > Vol. 155 N° 3 (Decembre 2009) . - pp. 617-626 Mots-clés : Supercritical  carbon  dioxide  extraction  Vetiver  essential  oil  Response  surface  metho  Khuismol  Zizanoic  acid Index. décimale : 660 Résumé : Three operating parameters of supercritical carbon dioxide extraction (SCE) have been optimized by a response surface method using central composite design to obtain high yields of essential oil from roots of Vetiveria zizanioides. Analyses by multiple regression indicated that pressure has a major linear effect on oil yield, whilst temperature and time have a lesser impact. However, the effect of temperature in combination with pressure is significant. Overall, extraction yields increase with both pressure and temperature. The optimal SCE yield (1.38%) obtained at the operating conditions of 190 bar, 50 °C and 100 min was about four times higher than that achieved by hydro-distillation. In general, the quality of vetiver oil extracted by SCE is suitable for the food industry. In order for the SCE extracts to be acceptable in the perfumery industry, however, a high yield of vetiver oil would be required in association with high khusimol and low zizanoic acid contents. DEWEY : 660 ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4X315MJ-1&_user=6 [...]