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Table 3 Chemical composition of essential oils of Olea europaea

From: The activity of commercial antimicrobials, and essential oils and ethanolic extracts of Olea europaea on Streptococcus agalactiae isolated from pregnant women

S/N

Chemical constituents

Chemical formula

RT

Area %

1

2-Butenal, 2-ethenyl-

C6H8O

3.255

1.56

2

2-Hexenal, (E)-

C6H10O

3.292

2.95

3

1-Hexanol

C6H14O

3.365

0.75

4

Heptanal

C7H14O

3.638

1.00

5

(1S)-2,6,6-trimethylbicyclo[3.1.1] hept-2-ene

C10H16

3.975

1.89

6

Pyridine, 3-ethenyl-

C7H7N

4.204

2.21

7

2,4-Heptadienal, (E,E)-

C2H5CH

4.412

1.58

8

Octanal

C8H16O

4.450

0.77

9

alpha-Phellandrene

C10H16

4.530

1.72

10

4-Carene

C10H10

4.729

0.79

11

2-Octenal, (E)-

C8H14O

4.908

0.50

12

1-Octanol

C8H18O

4.972

1.87

13

Pyridine, 5-ethenyl-2-methyl-

C8H9N

5.198

0.88

14

Nonanal

C9H18O

5.271

10.57

15

1,6-heptadiene,2,5,5-trimethyl

C10H18

5.674

0.73

16

Acetaldehyde, (3,3dimethylcyclohexylidene),(E)

C10H18O

5.720

1.07

17

1-Methylpentyl cyclopropane

C9H18

5.772

0.80

18

Decanal

C10H20O

6.059

2.23

19

3-Isopropylidene-5-methyl-hex-4-en-2-one

C10H16O

6.278

0.99

20

Octane, 1-iodo-

C8H17I

6.347

0.57

21

2,6-Octadien-1-ol, 3,7-dimethyl-(Z)-

C10H18O

6.418

0.39

22

2-Decenal, (E)-

C10H18O

6.485

2.78

23

2,4-Decadienal

C10H16O

6.724

0.76

24

4-tert-Butylcatechol, dimethyl ether

C12H18O2

6.809

4.63

25

9-Oxabicyclo [4.2.1] non-7-en-3-one

C8H12O

6.892

1.80

26

1-Oxaspiro [4.5] dec-6-ene, 2,6,10,10-tetramethyl-

C13H22O

6.995

1.10

27

2-Undecenal

C11H20O

7.206

0.78

28

cis-beta-Farnesene

C15H24

7.422

0.60

29

1-(3,6,6-trimethyl-1,6,7,7a-tetrahydrocyclopenta [c] pyran-1-yl) ethanone

C13H18

7.510

0.72

30

2-Buten-1-one,1-(2,6,6-trimethyl-1-cyclohexen-1-yl)-

C13H20O

7.631

0.50

31

Caryophyllene

C15H24

7.751

2.04

32

5,9-Undecadien-2-one, 6,10-dimethyl-

C13H22O

7.798

2.91

33

1H-Inden-1-one, 2,4,5,6,7,7a-hexahydro-4,4,7a-trimethyl-

C12H18O

7.931

0.46

34

1,4,7,-Cycloundecatriene, 1,5,9,9-tetramethyl-, Z,Z,Z-

C15H24

7.974

0.44

35

trans-beta-Ionone

C13H20O

8.093

2.39

36

21.xi-methyl-17-isocholest-16-en-3beta-ol

C27H46O

8.150

0.47

37

Naphthalene, 1,2,3,4,4a,5,6,8a-octahydro-4a,8-dimethyl-2- (1-methylethenyl)-,[2R-(2 alpha, 4a alpha, 8a beta)]

C15H24

8.232

0.69

38

Naphthalene, 1,2,4a,5,6,8a-hexahydro-4,7-dimethyl-1-(1-methylethyl)-

C15H34

8.323

2.91

39

1,6,10-Dodecatrien-3-ol,3711,trimethyl-, [S-(Z)]-

C15H26O

8.508

1.82

40

Benzoic acid, nonadecyl ester

C26H44O2

8.631

0.79

41

1H_Cycloprop[e] azulen-7-ol, decahydro-1,1,7-trimethyl-4-methylene-,[1ar-(1aalpha, 4a alpha, 7 beta, 7a beta, 7b alpha)]-

C15H24O

8.750

0.80

42

Caryophyllene

C15H24O

8.809

1.49

43

4,2,8-Ethanylylidene-2H-1-benzopyran, octahydro-4-methyl-

C14H22O

8.923

0.55

44

1,4-Methano-1H-indene, octahydro-1,7a-dimethyl-4-(1-methylethenyl)-[1S-(1 alpha, 3a beta, 4 alpha, 7a beta)]-

C15H24

8.961

0.52

45

Bicyclo[4.4.0]dec-1-ene, 2-isopropyl-5-methyl-9-methylene

C15H24

9.089

5.65

46

Heptadecane

C17H36

9.250

0.39

47

7-epi-cis-sesquisabinene hydrate

C15H26O

9.281

0.94

48

2,6,10-Dodecatrien-1-ol, 3,7,11,trimethyl

C15H26O

9.424

0.46

49

2-Pentadecanone, 6,10,14-trimethyl

C18H36O

10.058

1.66

50

1,2-Benzenedicarboxylic acid, bis(2-methylpropyl) ester

C16H22O4

10.235

0.72

51

Eicosane

C20H42

10.312

0.47

52

2,6,10,14,18-Pentamethyl-2,6,10,14,18-eicosapentaene

C25H42

10.467

0.97

53

Dibutyl phthalate

C16H22O4

10.713

0.43

54

Eicosane

C20H42

10.810

0.42

55

Isopropyl palmitate

C19H38O2

10.930

0.29

56

Heptasiloxane, 1,1,3,3,5,5,7,7,9,9,11,11,13,13-tetradecamethyl-

C14H44

11.235

0.09

57

Octadecane

C18H38

11.286

1.03

58

2-Myristynoyl-glycinamide

C16H31BrN2O2

11.336

0.77

59

Phytol

C20H40O

11.388

6.40

60

1H-Indole-2-carboxylic acid, 6-(4-ethoxyphenyl)-3-methyl-4-oxo-4,5,6,7-tetrahydro-, isopropyl ester

C21H25

11.741

0.55

61

Nonadecane

C19H40

12.174

1.09

62

Cyclotrisiloxane, hexamethyl

C6H18O3Si3

12.593

0.34

63

Heptasiloxane, 1,1,3,3,5,5,7,7,9,9,11,11,13,13-tetradecamethyl

C14H44O6Si7

12.994

0.98

64

Octasiloxane, 1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15-hexadecamethyl

C16H48O7Si8

13.779

1.81

65

Tetrasiloxane, decamethyl-

C10H30O3Si4

14.201

0.37

66

Silicic acid, diethyl bis (trimethylsilyl) ester

C10H28O4Si3

14.201

0.20

67

Heneicosane

C21H44

14.659

3.37

68

Tris (tert-butyldimethylsilyloxy) arsane

C18H45AsO3Si3

15.741

1.94