title: Sesquiterpene-rich volatile constituents of Ipomoea obscura (L.) Ker-Gawl.
abstract: The hydro-distilled essential oil from flowering aerial parts of Ipomoea obscura (L.) Ker-Gawl. (Convolvulaceae) was investigated by using gas chromatography equipped with a flame ionisation detector GC-FID and gas chromatography coupled with a mass spectrometry (GC/MS). Forty-two components, representing 97.1% of the total oil, were identified. The major constituents of the essential oil were α-bulnesene (23.8%), α-humulene (13.7%) and seychellene (11.2%). The other minor constituents were α-guaiene (8.3%), β-caryophyllene (7.1%), γ-terpinene (4.2%), hexadecanoic acid (3.0%) and β-elemene (2.7%). The oil was found to be rich in sesquiterpene hydrocarbon type constituents (78.4%).
authors: a Department of Phytochemistry , Regional Medical Research Centre (Indian Council of Medical Research) , Belgaum , Karnataka 590 010 , India.
authors: Rajesh K
authors: RK
authors: Joshi
mesh_terms: D035264:Flowers / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D027741:Ipomoea / Q000737:chemistry*; D009822:Oils, Volatile / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification; D055549:Volatile Organic Compounds / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D009822:Oils, Volatile; D010938:Plant Oils; D012717:Sesquiterpenes; D055549:Volatile Organic Compounds
keywords: GC/MS; Ipomoea obscura (L.) Ker-Gawl; volatile constituents; α-bulnesene