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Seasonal variation in the essential oil of strobilanthus ixiocephala benth. / R. B. Agarwal in The journal of essential oil research, Vol. 17 N° 3 (Mai-Juin 2005) 

Public ISBD [article]  in The journal of essential oil research > Vol. 17 N° 3 (Mai-Juin 2005) . - pp. 246-248 Titre : Seasonal variation in the essential oil of strobilanthus ixiocephala benth. Type de document : texte imprimé Auteurs : R. B. Agarwal, Auteur ; V. D. Rangari, Auteur Année de publication : 2006 Article en page(s) : pp. 246-248 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Strobilanthus  ixiocephala  Acanthaceae  Essential  oil  composition  Ixiocephol  T-cadinol Résumé : The chemical composition of the essential oil of Strobilanthus ixiocephala Benth. was determined by GC/MS analysis. The oil obtained from fresh flowering tops of 1st year and 2nd consecutive year was found to possess compositional differences in the percentage of chemical constituents. The GC-mass data of the oil revealed the presence of a new sesquiterpene alcohol ixiocephol (23.4%) and T-cadinol (17.6%). Among the other constituents β-caryophyllene (6.6%) and α-fenchyl acetate (2.2%) were also detected. The second year's oil also contained ixiocephol (3.9%) and T-cadinol (23.1%) along with β-caryophyllene (16%) and α-fenchyl acetate (24.7%) which differed drastically as compared to first year's oil of S. ixiocephala. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698890#.UeJ-6GF2_n5 [article] Seasonal variation in the essential oil of strobilanthus ixiocephala benth. [texte imprimé] / R. B. Agarwal, Auteur ; V. D. Rangari, Auteur . - 2006 . - pp. 246-248. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 3 (Mai-Juin 2005) . - pp. 246-248 Mots-clés : Strobilanthus  ixiocephala  Acanthaceae  Essential  oil  composition  Ixiocephol  T-cadinol Résumé : The chemical composition of the essential oil of Strobilanthus ixiocephala Benth. was determined by GC/MS analysis. The oil obtained from fresh flowering tops of 1st year and 2nd consecutive year was found to possess compositional differences in the percentage of chemical constituents. The GC-mass data of the oil revealed the presence of a new sesquiterpene alcohol ixiocephol (23.4%) and T-cadinol (17.6%). Among the other constituents β-caryophyllene (6.6%) and α-fenchyl acetate (2.2%) were also detected. The second year's oil also contained ixiocephol (3.9%) and T-cadinol (23.1%) along with β-caryophyllene (16%) and α-fenchyl acetate (24.7%) which differed drastically as compared to first year's oil of S. ixiocephala. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698890#.UeJ-6GF2_n5