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Table 3 Essential oil composition of aerial parts of Thymus algeriensis , cultivated in different locations

From: In-vitro assessment of antioxidant and antimicrobial activities of methanol extracts and essential oil of Thymus hirtus sp. algeriensis

NO.

RIa

Componentsb

Peak area (%)

Identification methodsd

   

MGc

MTc

MOKc

 

1

939

α-pinene

-

2.55

3.74

GC-MS

2

946

Camphene

-

1.49

1.83

GC-MS

3

975

Sabinene

-

1.56

-

GC-MS-RTe

4

979

β-pinene

-

1.44

1.14

GC-MS

5

1017

α –terpinene

1.18

1.69

-

GC-MS-RI

6

1025

ρ-cymene

3.22

12.43

-

GC-MS-RI

7

1029

Limonene

-

-

0.78

GC-MS

8

1031

1,8-cineole

3.45

14.12

19.96

GC-MS

9

1060

γ-terpinene

2.43

4.30

-

GC-MS

10

1070

trans-sabinene hydrate

-

1.21

-

GC-MS-CASf#

11

1089

Terpinolene

1.35

1.25

-

GC-MS

12

1097

Cis-sabinene-hydrate

-

1.15

-

GC-MS-CAS#

13

1098

Linalool

18.05

-

-

GC-MS

14

1146

Camphor

13.03

2.16

19.20

GC-MS

15

1165

Pinocarvone

-

-

0.97

GC-MS

16

1169

Borneol

-

2.78

7.64

GC-MS

17

1176

4-carvomenthenol

11.2

-

3.72

GC-MS

18

1177

Terpinen-4-ol

-

33.34

-

GC-MS

19

1205

Verbenone

-

-

1.06

GC-MS

20

1289

Bornyl acetate

5.41

8.34

11.67

GC-MS

21

1420

β-caryophyllene

-

-

0.85

GC-MS

22

1511

γ-cadinene

1.21

-

-

GC-MS

23

1578

Spathulenol

2.80

-

-

GC-MS

24

1582

Caryophyllene oxide

2.09

2.20

4.60

GC-MS

25

1590

Viridiflorol

11.71

-

-

GC-MS

Chemical classes

 

Monoterpene hydrocarbons

8.18

26.71

8.46

 
 

Oxygenated monoterpenes

51.14

29.76

59.53

 
 

Sesquiterpene hydrocarbons

1.21

-

0.85

 
 

Oxygenated sesquiterpenes

16.6

35.54

8.32

 
 

Total identified, %

77.75

92.01

77.16

 
 

Essential Oil Yield (%)

2.36

10.82

5.75

 
  1. aRI (retention index) measured relative to n-alkanes (C10 –C15); bComponents listed in order of their retention index on HP on HP-5 column, cPlant codes; dGC-MS: identification based on a high match of mass spectra; eRT: retention time compared with those reported in the literature [25]; fCAS # = Chemical Abstracts service reference number compared with those reported in the literature [26].