Comparison of Yield Chemical Composition and Biological Activities of Essential Oils Obtained from Thymus pallidus and Thymus satureioides Coss. Grown in Wild and Cultivated Conditions in Morocco.
In: Journal of Essential Oil-Bearing Plants, Jg. 23 (2020-02-01), Heft 1, S. 1-14
academicJournal
Zugriff:
Thymus pallidus and Thymus satureioides are two endemic Moroccan species of thyme that belong to the Lamiaceae family. They are exploited intensively from the wild for their essential oils (EOs) which are characterized by numerous therapeutic properties. In order to ensure the conservation and sustainable use of these species, the effect of cultivation on yield, chemical composition, antioxidant and antimicrobial activities of EOs were investigated over the course of three years. A slight decrease of EOs yield was obtained by steam distillation from cultivated thymes. As well as the yield, the scanning electron microscopy analysis of the leaves has also showed a decrease in the gland density. The gas chromatography/mass spectrometry (GC/MS) and GC/Flame Ionization Detector (GC/FID) analyses of EOs led to the identification of 32 compounds representing more than 98.4 % of the total oils. The major compounds of wild T. pallidus EOs were γ-terpinene (20.23-21.49 %), borneol (12.33-12.39 %) and α-phellandrene (11.63-12.58 %). Whereas EOs obtained from cultivated plants were dominated by γ-terpinene (17.27-17.32 %), borneol (12.39-8.3 %), camphene (10.67-10.97 %) and α-phellandrene (10.57-10.71 %). Carvacrol (26.07-26.18 %) and borneol (17.25-20.67 %) were the main chemical constituents in both wild and cultivated T. satureioides EOs. Regarding the antioxidant activity, the EOs of cultivated thymes were not highly affected by cultivation. Despite some chemical variability, our results show that cultivation also did not affect the antimicrobial activity of the essential oils of both species. These results imply that the cultivation process could be a promising alternative to ensure the sustainable use of the two endemic thyme species in threat. [ABSTRACT FROM AUTHOR]
Titel: |
Comparison of Yield Chemical Composition and Biological Activities of Essential Oils Obtained from Thymus pallidus and Thymus satureioides Coss. Grown in Wild and Cultivated Conditions in Morocco.
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Autor/in / Beteiligte Person: | El-Bakkal, Salah eddine ; Zeroual, Safia ; Elouazkiti, Mohammad ; Mansori, Mounir ; Bouamama, Hafida ; Zehhar, Naïma ; El-Kaoua, Mimoun |
Zeitschrift: | Journal of Essential Oil-Bearing Plants, Jg. 23 (2020-02-01), Heft 1, S. 1-14 |
Veröffentlichung: | 2020 |
Medientyp: | academicJournal |
ISSN: | 0972-060X (print) |
DOI: | 10.1080/0972060X.2019.1708216 |
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