Essential oil composition of juniperus wallichiana from north western region of kumaun himalaya / Chandan S. Chanotiya in The journal of essential oil research, Vol. 19 N°5 (Septembre/Octobre 2007)  

Public ISBD [article]  inThe journal of essential oil research > Vol. 19 N°5 (Septembre/Octobre 2007) . - pp. 422-425 Titre : Essential oil composition of juniperus wallichiana from north western region of kumaun himalaya Type de document : texte imprimé Auteurs : Chandan S. Chanotiya, Auteur ; Chandra S. Mathela, Auteur Année de publication : 2007 Article en page(s) : pp. 422-425 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Juniperus wallichiana Cupressaceae Essential oil composition Sabinene Résumé : The essential oils isolated from leaves, berries and twigs of Juniperus wallichiana collected from areas near Milam glacier were dominated by sabinene (46.7%), besides α-pinene (6.6%) and terpinen-4-ol (6.5%) in leaf oil, while the berry oil contained higher content of sabinene (50.6%) and α-pinene (8.1%). The twig essential oil contained α-cadinol (9.8%), terpinen-4-ol (8.4%), oplopanone (8.0%) and epi-α-cadinol (5.0%) and almost no monoterpenes. Indian oils revealed a higher percentage of monoterpenoids in the leaf and berry oils while the twig oil contained sesquiterpenoids as major compounds. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699942#.UXAu7kqC5mM [article] Essential oil composition of juniperus wallichiana from north western region of kumaun himalaya [texte imprimé] / Chandan S. Chanotiya, Auteur ; Chandra S. Mathela, Auteur . - 2007 . - pp. 422-425. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 19 N°5 (Septembre/Octobre 2007) . - pp. 422-425 Mots-clés : Juniperus wallichiana Cupressaceae Essential oil composition Sabinene Résumé : The essential oils isolated from leaves, berries and twigs of Juniperus wallichiana collected from areas near Milam glacier were dominated by sabinene (46.7%), besides α-pinene (6.6%) and terpinen-4-ol (6.5%) in leaf oil, while the berry oil contained higher content of sabinene (50.6%) and α-pinene (8.1%). The twig essential oil contained α-cadinol (9.8%), terpinen-4-ol (8.4%), oplopanone (8.0%) and epi-α-cadinol (5.0%) and almost no monoterpenes. Indian oils revealed a higher percentage of monoterpenoids in the leaf and berry oils while the twig oil contained sesquiterpenoids as major compounds. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699942#.UXAu7kqC5mM

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Valeriana wallichii DC, a new chemotype from Northwestern Himalaya / Chandra S. Mathela in The journal of essential oil research, Vol. 17 N° 6 (Novembre-Décembre 2005)  

Public ISBD [article]  inThe journal of essential oil research > Vol. 17 N° 6 (Novembre-Décembre 2005) . - pp. 672-675 Titre : Valeriana wallichii DC, a new chemotype from Northwestern Himalaya Type de document : texte imprimé Auteurs : Chandra S. Mathela, Auteur ; Mamta Tiwari, Auteur ; Subhash S. Sammal, Auteur Année de publication : 2006 Article en page(s) : pp. 672-675 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : 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 [article] Valeriana wallichii DC, a new chemotype from Northwestern Himalaya [texte imprimé] / Chandra S. Mathela, Auteur ; Mamta Tiwari, Auteur ; Subhash S. Sammal, Auteur . - 2006 . - pp. 672-675. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 6 (Novembre-Décembre 2005) . - pp. 672-675 Mots-clés : 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

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