Table 2 Relative contents of volatile terpenoids in the essential oil of 10 thyme species

1

γ-Terpinene

1,059

1,060

11.45 ± 0.07c

10.77 ± 0.09e

8.19 ± 0.02 g

13.96 ± 0.08a

13.90 ± 0.09a

12.61 ± 0.08b

11.18 ± 0.13d

10.59 ± 0.05f

0.70 ± 0.02 h

0.48 ± 0.01i

2

p-Cymene

1,026

1,025

23.00 ± 0.09a

15.34 ± 0.19e

16.40 ± 0.15d

18.42 ± 0.12b

18.08 ± 0.17c

17.98 ± 0.05c

16.50 ± 0.33d

12.03 ± 0.1f

-

0.62 ± 0.01 g

3

Thymol

1,292

1,291

2.12 ± 0.05 h

7.59 ± 0.12 g

38.57 ± 0.25b

35.43 ± 0.14d

36.02 ± 0.14c

41.04 ± 0.13a

26.26 ± 0.05f

28.96 ± 0.09e

0.57 ± 0.01i

0.59 ± 0.01i

4

Carvacrol

1,304

1,299

20.74 ± 0.07b

48.37 ± 0.23a

6.87 ± 0.06c

2.27 ± 0.05 g

2.48 ± 0.03f

6.46 ± 0.06d

1.95 ± 0.03 h

3.78 ± 0.02e

-

-

5

Geraniol

1,259

1,255

-

-

-

-

-

0.49 ± 0.01c

-

0.69 ± 0.02b

28.54 ± 0.20a

-

6

Geraniol acetate

1,388

1,382

-

-

-

-

-

-

-

1.50 ± 0.01b

34.81 ± 0.22a

-

7

α-Terpineol

1,193

1,189

0.95 ± 0.01c

-

1.11 ± 0.01b

-

-

-

0.75 ± 0.01d

0.50 ± 0.01e

0.85 ± 0.02 cd

30.84 ± 0.24a

8

α-Terpineol acetate

1,355

1,350

-

-

-

-

-

-

-

-

1.17 ± 0.02b

45.46 ± 0.10a

9

Eucalyptol

1,030

1,032

5.78 ± 0.01b

0.93 ± 0.02d

7.02 ± 0.07a

0.81 ± 0.02ef

0.84 ± 0.02e

0.64 ± 0.01 g

1.71 ± 0.03c

-

0.77 ± 0.02f

0.67 ± 0.01 g

10

endo-Borneol

1,165

1,167

7.89 ± 0.06c

1.37 ± 0.05f

4.96 ± 0.05d

0.55 ± 0.01 h

1.23 ± 0.01 g

0.55 ± 0.01 h

9.02 ± 0.05a

4.13 ± 0.02e

8.18 ± 0.06b

1.26 ± 0.03 g

11

β-Caryophyllen

1,421

1,419

1.74 ± 0.01 g

1.56 ± 0.03 h

1.75 ± 0.02 g

3.37 ± 0.04d

4.01 ± 0.03b

3.11 ± 0.03e

3.79 ± 0.07c

3.07 ± 0.02e

4.19 ± 0.03a

2.60 ± 0.01f

12

Caryophyllen oxide

1,585

1,581

1.14 ± 0.01a

-

0.51 ± 0.01d

0.47 ± 0.01e

0.74 ± 0.02c

-

0.93 ± 0.02b

0.34 ± 0.01f

0.48 ± 002e

-

13

α-Thujene

926

929

0.91 ± 0.01 h

1.96 ± 0.05b

1.21 ± 0.01f

2.09 ± 0.02a

1.27 ± 0.01e

1.53 ± 0.02c

1.07 ± 0.02 g

1.30 ± 0.01d

-

-

14

Sabinene

972

974

0.81 ± 0.01b

-

-

-

-

-

-

-

-

2.18 ± 0.05a

15

1-Octen-3-ol

978

980

0.64 ± 0.01i

1.12 ± 0.03e

2.07 ± 0.03a

1.20 ± 0.03d

1.30 ± 0.02c

0.92 ± 0.01f

0.88 ± 0.01 g

1.39 ± 0.02b

0.69 ± 0.02 h

-

16

β-Myrcene

991

991

0.96 ± 0.01 g

1.09 ± 0.02f

1.14 ± 0.02e

1.73 ± 0.01b

1.37 ± 0.01d

1.86 ± 0.01a

0.51 ± 0.01 h

1.12 ± 0.01e

0.39 ± 0.03i

1.62 ± 0.03c

17

D-Limonene

1,028

1,032

0.89 ± 0.01c

-

0.70 ± 0.01e

0.90 ± 0.03c

0.80 ± 0.02d

0.81 ± 0.01d

1.09 ± 0.02b

0.77 ± 0.02d

-

6.04 ± 0.06a

18

α-Terpinolen

1,087

1,088

1.65 ± 0.02 g

2.10 ± 0.04f

1.58 ± 0.02 h

3.24 ± 0.01b

2.52 ± 0.02e

2.76 ± 0.03d

3.98 ± 0.02a

2.83 ± 0.01c

-

-

19

Linalool

1,099

1,099

1.17 ± 0.03f

1.52 ± 0.03d

1.33 ± 0.02e

1.06 ± 0.02 g

1.21 ± 0.02f

5.33 ± 0.02a

0.72 ± 0.02 h

0.38 ± 0.01i

4.12 ± 0.05b

1.81 ± 0.02c

20

Camphene

949

952

2.60 ± 0.01a

-

0.92 ± 0.01d

-

-

-

1.84 ± 0.04c

-

2.15 ± 0.04b

-