title: Essential oil composition of Valeriana officinalis L. roots cultivated in Iran. Comparative analysis between supercritical CO2 extraction and hydrodistillation.
abstract: The composition of essential oil extracted from Valeriana officinalis L. roots growing wild in Iran was studied by hydrodistillation and supercritical CO2 extraction. Forty-seven components representing 89.3% and 35 constituents varying from 86.1% to 95.1% of the oil obtained by hydrodistillation and supercritical CO2 were identified, respectively. The major components in the extracted oil from supercritical CO2 were isovaleric acid (18.7-41.8%), valerenic acid (8.2-11.8%), acetoxyvaleranone (5.6-9.6%), (Z)-valernyl acetate (4.5-6.5%), bornyl acetate (2.3-7.7%) and valerenol (3.7-5.2%), whereas by hydrodistillation were bornyl acetate (11.6%), valerenic acid (8.0%), (Z)-valernyl acetate (7.9%) and acetoxyvaleranone (7.6%). The analysis of the extracts was performed by capillary GC and GC/MS.
authors.affiliation: School of Chemical Engineering, University of Tehran, P.O. Box 11365-4563, Tehran, Iran.
authors.forename: Asghar
authors.initials: A
authors.lastname: Safaralie
authors.forename: Shohreh
authors.initials: S
authors.lastname: Fatemi
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Sefidkon
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D007492:Iran; D009822:Oils, Volatile / Q000032:analysis*; D018517:Plant Roots / Q000737:chemistry*; D014632:Valerian / Q000737:chemistry*
chemical_list: D009822:Oils, Volatile; D002245:Carbon Dioxide