| Titre : | Valeriana wallichii DC, a new chemotype from Northwestern Himalaya (2006) |
| Auteurs : | Chandra S. Mathela, Auteur ; Mamta Tiwari, Auteur ; Subhash S. Sammal, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | The journal of essential oil research (Vol. 17 N° 6, Novembre-Décembre 2005) |
| Article en page(s) : | pp. 672-675 |
| Note générale : | Génie Chimique |
| Langues : | Anglais |
| Tags : | Valeriana wallichii Valerianaceae Chemotypes Essential oil composition Maaliol Viridiflorol Patchouli alcohol 8-acetoxy-patchouli |
| Résumé : | The major constituents of the oils from roots and rhizomes of Valeriana wallichii DC were separated and characterized by GC, GC/MS and NMR (1H- and 13C-). The chemical compositions of the oils show two chemotypes within Valeriana wallichii. The type-I was characterized by presence of maaliol (64.3%), viridiflorol (7.2%) and sesquiterpene hydrocarbons (19.2%). The type-II contained patchouli alcohol (40.2%), viridiflorol (5.2%), 8-acetoxy-patchouli alcohol (4.5%) and sesquiterpene hydrocarbons (34.5%). Viridiflorol and 8-acetoxy-patchouli alcohol have been isolated from V. wallichii for the first time. Since the V. wallichii is being commercially used even today in Nepal and India as a substitute for V. officinalis, the sharp chemical differences among V. wallichii materials necessitates their identification before commercial exploitation for phytomedicines and flavor chemicals. |
| ISSN : | 1041-2905 |
| En ligne : | http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9699029#.UcLXWWF2_n4 |
