Investigation of the alteration of the composition of various essential oils used in aroma lamp applications

✍ Scribed by Brunhilde Oberhofer; Alexej Nikiforov; Gerhard Buchbauer; Leopold Jirovetz; Carlo Bicchi

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 93 KB
• Volume: 14
• Category: Article
• ISSN: 0882-5734
• DOI: 10.1002/(sici)1099-1026(199909/10)14:5<293::aid-ffj829>3.0.co;2-t

✦ Synopsis

The alteration of the composition of 15 samples of various essential oils used in aroma lamps and their corresponding headspace samples were analysed by GC±FID, GC±FTIR±MS and GC-sning technique to obtain information on the changes of aroma compounds under cold and hot conditions. The samples investigated were genuine essential oil and corresponding cold headspace samples and headspace samples of heated tubs and half-full tubs after the heating experiments. No detectable quantities of volatile pyrolysis products with health-dangerous eects were found, but there were signi®cant alterations in composition. Therefore, the aroma-relevant compounds of the essential oils investigated pass from the aroma lamp tub to the air without forming new components and the detected volatiles can thus be inhaled for aromatherapeutical use. Only a time-dependent change from highly volatile to less volatile essential oil constituents in the heating experiments was registered.