Chemical composition of the essential oils from Thymus transcaspicus in natural habitats
In: Chemistry of Natural Compounds, Jg. 46 (2010-03-01), S. 121-124
Online
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Zugriff:
7.7% -terpinene, 7.6% carvacrol, and 6.3% p-cymene from this species. The purpose of the present investigation was to analyze the chemical constituent of plant material from T. transcaspicus in different habitats in Khorasan, Northeast of Iran. Table 1 shows that the range of essential oils was from 1.2% to 2.3% in different habitats, with the highest in Tiwan (2.3%). In general, 51 constituents were identified in the essential oils (Table 1) with 43 (representing 100% of the total amount) in Reiin, 36 (representing 96.3% of the total amount) in Pakotal, 43 (representing 99.4% of the total amount) in Laeen Kohneh, and 40 (representing 99.0% of the total amount) in Tiwan. Thymol and carvacrol were the main constituents. This has also been reported elsewhere 20. The thymol content for Pakotal, Laeen Kohneh, and Reiin were 54.3, 45.3, and 44.9%, respectively, and these values were 8.4, 13.1, and 13.3% for carvacrol. However, the trend was somehow different for the Reiin habitat where the content of carvacrol and thymol were 47.3 and 5.3%, respectively. The borneol content for this area was 7.1%. Based on these findings, two distinct chemotypes were recognized, where the thymol chemotype was from Pakotal, Laeen Kohneh, and Tiwan, and the carvacrol chemotype was from Reiin. These differences can be associated with the probable hybridization of different species in the area. This has also been reported in the literature 21. Pluhar et al. 22 studied the essential oil variability of T. pannonicus and T. praecox growing wild in natural habitats and reported that the most common chemotype of T. pannonicus was thymol/p-cymene, while for T. praecox a geraniol/germacrene D/-caryophyllene chemotype was also recorded. The thymol concentration was positively correlated with humus and Na, K, Mg, and Cd contents of the soil.
Titel: |
Chemical composition of the essential oils from Thymus transcaspicus in natural habitats
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Autor/in / Beteiligte Person: | P Rezvani Moghaddam ; Koocheki, Alireza ; Tabrizi, L. ; M Nassiri Mahallati |
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Zeitschrift: | Chemistry of Natural Compounds, Jg. 46 (2010-03-01), S. 121-124 |
Veröffentlichung: | Springer Science and Business Media LLC, 2010 |
Medientyp: | unknown |
ISSN: | 1573-8388 (print) ; 0009-3130 (print) |
DOI: | 10.1007/s10600-010-9544-2 |
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