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Essential oil composition and antioxidant activity of Thymus bracteosus Vis. ex Benth.
Author(s) -
Brantner Adelheid H.,
Pfeifhofer Hartwig W.,
Ercegovac Ozren,
Males Zeljan,
Plazibat Misko
Publication year - 2005
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/ffj.1494
Subject(s) - chemistry , essential oil , thymol , antioxidant , lamiaceae , germacrene , scavenger , composition (language) , food science , caryophyllene , traditional medicine , organic chemistry , medicine , linguistics , philosophy
The composition of the essential oil and the antioxidant properties of the dried herbs of Thymus bracteosus Vis. ex Benth. (Lamiaceae) were investigated. Of the essential oil (yield 0.06%), 77.4% could be identified by GC[sol ]MS analysis. The major compounds were germacrene‐D (11.6%), β ‐caryophyllene (9.7%), myrcene (7.2%), α ‐pinene (6.3%) and trans ‐ β ‐farnesene (6.1%). The content of thymol was very low (0.1%) as compared with the essential oil of T. vulgaris . Aqueous and methanolic extracts as well as the essential oil of T. bracteosus were also investigated on their radical scavenger capacity. Furthermore, the ability of the extracts to inhibit peroxidation of membrane lipids was tested. The essential oil of T. bracteosus did not show any antioxidant activity in the test systems. Copyright © 2005 John Wiley & Sons, Ltd.