Table 5.
Seasonal composition ofS. thymbraEO after fractionation
|
Compounds |
% Composition* |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| A1 | A2 | A3 | B1 | B2 | B3 | C1 | C2 | C3 | |
| γ-terpinene |
54 |
|
|
50 |
|
|
39 |
|
|
| β-caryophyllene |
15 |
|
|
15 |
|
|
32 |
|
|
|
p-cymene |
10 |
|
|
11 |
|
|
12 |
|
|
| thymol-methyl-ether |
4 |
|
|
- |
9 |
|
- |
10 |
|
|
thymol |
|
83 |
61 |
|
75 |
51 |
|
73 |
47 |
| carvacrol |
|
5 |
21 |
|
11 |
25 |
|
11 |
22 |
| thymol acetate |
|
3 |
|
|
0.5 |
|
|
1 |
|
| caryophyllene oxide |
|
8 |
|
|
3 |
|
|
3 |
|
| terpinen-4-ol |
|
|
5 |
|
|
7 |
|
|
8 |
| Thym./carv. ratio | - | 16.6 | 2.9 | - | 6.8 | 2.0 | - | 6.6 | 2.1 |
* sample A: before flowering; sample B: during flowering; sample C: after flowering.
Fraction 1-3 were obtained through fractionation on silicagel column chromatography and analysed by CG-FID-MS on a Mega5 column (5%phenyl methyl polysiloxane) 25 m, 0.25 mm i.d., 0.25 μm film thickness.