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Table 2 Chemical composition of plant essential oils

From: Synergy in the adulticidal efficacy of essential oils for the improvement of permethrin toxicity against Aedes aegypti L. (Diptera: Culicidae)

No.

Chemical constituent

RICalca

RILitb

Percentage composition (%)

C. rotundus

A. galanga

C. verum

1

α-Pinene

940

944

 

0.78

0.74

2

Camphene

957

961

  

0.47

3

Benzaldehyde

967

971

  

1.14

4

β-Pinene

983

985

 

1.40

0.34

5

Limonene

1033

1035

 

1.24

0.74

6

1,8-Cineole

1039

1040

 

10.17

1.36

7

Linalool

1100

1111

  

0.47

8

3-Phenylpropanal

1168

1170

  

4.09

9

Borneol

1180

1181

  

1.13

10

Terpinen-4-ol

1186

1188

  

1.18

11

Α-Terpineol

1202

1211

  

2.45

12

Myrtenol

1202

1212

2.36

  

13

Cinnamaldehyde

1225

1305

  

64.66

14

Chavicol

1345

1346

 

10.09

 

15

α-Cubebene

1353

1355

7.53

 

0.36

16

Geranyl acetate

1376

1377

 

1.84

 

17

α-Copaene

1385

1386

7.97

 

5.83

18

β-Elemene

1395

1395

 

2.76

 

19

α-Guaiene

1395

1396

2.73

  

20

Methyl eugenol

1399

1407

 

2.17

 

21

Cyperene

1418

1419

14.04

  

22

α-Santalene

1425

1426

 

1.13

 

23

β-Caryophyllene

1431

1432

1.18

 

1.63

24

Cinnamic acid

1436

1438

  

0.46

25

α-Bergamotene

1441

1442

 

16.28

 

26

Cinnamyl acetate

1450

1452

  

6.61

27

β-Farnesene

1453

1454

 

4.55

 

28

cis-9-Dodecenyl acetate

1457

1459

3.34

  

29

γ-Muurolene

1483

1483

3.16

  

30

α-Curcumene

1485

1485

 

1.14

 

31

Pentadecane

1503

1503

 

7.50

 

32

α-Muurolene

1506

1506

1.93

  

33

δ-Guaiene

1511

1511

2.22

  

34

β-Bisabolene

1516

1517

 

18.27

 

35

δ-Cadinene

1524

1525

2.37

 

1.15

36

L-Calamenene

1530

1531

  

0.66

37

β-Sesquiphellandrene

1532

1533

 

5.37

 

38

Calamenene

1533

1534

9.57

  

39

4b,5,6,7,8,8a,9,10-Octahydro-1-methylphenanthrene

1543

1544

2.55

  

40

4,7-Dimethyl-1-tetralone

1558

1559

0.95

  

41

β-Caryophyllene epoxide

1596

1597

4.90

 

1.39

42

Cadina-1,4-diene

1637

1638

  

0.38

43

Ledene

1668

1669

3.39

  

44

8-Heptadecene

1675

1676

 

0.91

 

45

Cadalene

1683

1683

2.95

  

46

Oxo-α-Ylangene

1687

1694

1.20

  

47

Isopetasan

1714

1715

5.88

  

48

Farnesyl acetate

1831

1831

 

1.15

 
 

Total identified

  

80.22

86.75

97.24

 

No. of identified constituents

  

19

17

21

  1. aRetention indices are determined using n-alkanes (C8-C40)
  2. bRetention indices of reference compounds from literature