Essential oil ofArtemisia scoparia
The chemical composition of the essential oil of oriental wormwood growing in Kazathstan has been investigated. Of the components of the oil, 28 have been identified, and the structure of an acetylenic hydrocarbon has been refined.
Essential oils and their constituents : XXXII. Gas chromatography of sesquiterpene hydrocarbons☆
Abstract Characteristic gas chromatographic criteria of identity are reported for 34 authenticated sesquiterpene hydrocarbons, using Reoplex 400, silicone nitrile XE-60 and silicone rubber SE-30 as column substrates and naphthalene, 2-methylnaphthalene and acenaphthene as internal reference standards. The value of the experimental data is demonstrated by application to the analysis of essential oils and correlation with characteristic structural features of some sesquiterpenes. The occurrence of ylangene, α-bergamotene and δ-cadinene in oil of copaiba balsam is reported for the first time.
GAS–LIQUID PARTITION CHROMATOGRAPHY OF SESQUITERPENE COMPOUNDS
Sesquiterpene compounds were effectively separated by gas chromatography and identified by infrared spectrophotometry. Examples given include the recovery and characterization of β-caryophyllene and β-humulene from oil of balsam copaiba, of α- and β-vetivone from oil of vetiver, and of α- and β-santalol from oil of sandalwood.