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Investigation of the alteration of the composition of various essential oils used in aroma lamp applications
Author(s) -
Oberhofer Brunhilde,
Nikiforov Alexej,
Buchbauer Gerhard,
Jirovetz Leopold,
Bicchi Carlo
Publication year - 1999
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/(sici)1099-1026(199909/10)14:5<293::aid-ffj829>3.0.co;2-t
Subject(s) - aroma , chemistry , essential oil , composition (language) , pyrolysis , chromatography , food science , organic chemistry , philosophy , linguistics
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‐sniffing 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 effects were found, but there were significant 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. Copyright © 1999 John Wiley & Sons, Ltd.