title: Chemical diversity in the essential oil of Indian valerian (Valeriana jatamansi Jones).
abstract: To explore the diversity in the essential oil yield and composition of Valeriana jatamansi Jones (syn. V. wallichii DC) growing wild in Uttarakhand (Western Himalaya), 17 populations were collected from different locations and grown under similar conditions. Comparative results showed considerable variations in the essential oil yield and composition. The essential oil yield varied from 0.21 to 0.46% in the fresh roots and rhizomes of different populations of V. jatamansi. Analysis of the essential oils by GC (RI) and GC/MS and the subsequent classification by principal component analysis (PCA) resulted in six clusters with significant variations in their terpenoid composition. Major components in the essential oils of the different populations were patchouli alcohol (1; 13.4-66.7%), α-bulnesene (3; <0.05-23.5%), α-guaiene (4; 0.2-13.3%), guaiol (5; <0.05-12.2%), seychellene (6; 0.2-9.9%) viridiflorol (<0.05-7.3%), and β-gurjunene (7; 0.0-7.1%). V. jatamansi populations with contents of 1 higher than 60% may be utilized commercially in perfumery.
authors: Central Institute of Medicinal and Aromatic Plants (CIMAP, CSIR), Research Centre Pantnagar, P.O. Dairy Farm Nagla, Udham Singh Nagar, Uttarakhand-263149, India. rswaroop1979@yahoo.com
authors: Ram S
authors: RS
authors: Verma
authors: Rajesh K
authors: RK
authors: Verma
authors: Rajendra C
authors: RC
authors: Padalia
authors: Amit
authors: A
authors: Chauhan
authors: Anand
authors: A
authors: Singh
authors: Hemendra P
authors: HP
authors: Singh
mesh_terms: D001643:Bridged Bicyclo Compounds / Q000032:analysis; D002849:Chromatography, Gas; D003521:Cyclopropanes / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D007194:India; D009822:Oils, Volatile / Q000032:analysis / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry; D025341:Principal Component Analysis; D027343:Rhizome / Q000737:chemistry; D012717:Sesquiterpenes / Q000032:analysis; D045789:Sesquiterpenes, Guaiane; D013729:Terpenes / Q000032:analysis / Q000737:chemistry*; D028161:Valerianaceae / Q000737:chemistry*
chemical_list: D001643:Bridged Bicyclo Compounds; D003521:Cyclopropanes; D009822:Oils, Volatile; D012717:Sesquiterpenes; D045789:Sesquiterpenes, Guaiane; D013729:Terpenes; C512113:alpha-bulnesene; C570500:seychellene; C087929:beta-gurjunene; C052983:patchouli alcohol; C552080:viridiflorol; C469146:guaiol