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Table 2 Chemical composition and oil yields of Cymbopogon species

From: Chemical composition and insecticidal activity of plant essential oils from Benin against Anopheles gambiae (Giles)

KIexpa

KIlitb

IDc

Compoundsd

Cymbopogon citratus

Cymbopogon giganteus

Cymbopogon schoenanthus

%

%

%

978

974

MS, RI

Sulcatone

0.5

  

982

988

MS, RI

Myrcene

12.4

  

984

988

MS, RI

2,3-Dehydro-1,8-cineole

 

0.1

0.1

995

1001

MS, RI

δ-2-Carene

 

0.1

15.5

998

1002

MS, RI

α-Phellandrene

  

0.2

1009

1014

MS, RI

α-Terpinene

  

0.2

1017

1020

MS, RI

p-Cymene

 

0.5

0.1

1020

1024

MS, RI

Limonene

 

9.6

3.6

1029

1032

MS, RI

Z-β-Ocimene

0.3

 

0.1

1039

1044

MS, RI

E-β-Ocimene

0.2

 

0.1

1081

1083

MS, RI

L-Fenchone

  

0.2

1082

1082

MS, RI

m-Cymenene

 

0.2

 

1085

1090

MS, RI

6,7-Epoxymyrcene

0.2

  

1093

1095

MS, RI

Linalool

1.1

  

1114

1118

MS, RI

Z-p-menth-2-en-1-ol

  

1.4

1116

1119

MS, RI

E - p -Mentha-2,8-dienol

 

19.3

 

1129

1133

MS, RI

Z - p -Mentha-2,8-dienol

 

10.2

 

1132

1136

MS, RI

E-p-menth-2-en-1-ol

  

0.7

1138

1144

MS, RI

Neo-Isopulegol

 

0.1

 

1145

1148

MS, RI

Citronellal

0.1

0.7

 

1148

 

MS

4-Isopropenylcyclohexanone

 

0.4

 

1160

1166

MS, RI

p-mentha-1,5-dien-8-ol

  

0.1

1168

1173

MS, RI

Rose furan epoxide

0.2

  

1180

1179

MS, RI

p-Cymen-8-ol

  

0.1

1183

1186

MS, RI

α-Terpineol

  

1.5

1183

1187

MS, RI

E -p-Mentha-1(7),8-dien-2-ol

 

19.6

 

1188

1195

MS, RI

Z-Piperitol

  

0.3

1194

 

MS

p-Menth-6-en-2,3-diol

 

3.2

 

1201

1209

MS, RI

E-Piperitol

  

0.2

1212

1215

MS, RI

E-Carveol

 

6.0

 

1216

1224

MS, RI

2,3-Epoxyneral

0.1

  

1224

1226

MS, RI

Z -Carveol

 

17.0

 

1225

1227

MS, RI

Z-p-Mentha-1(7),8-dien-2-ol

 

2.1

 

1237

1235

MS, RI

Neral

33.1

  

1237

1239

MS, RI

Carvone

 

3.2

 

1253

1249

MS, RI

Piperitone

 

0.1

58.9

1257

1249

MS, RI

Geraniol

1.0

  

1266

1269

MS, RI

Perilla aldehyde

 

0.8

 

1268

1264

MS, RI

Geranial

44.3

  

1286

1293

MS, RI

2-Undecanone

0.1

  

1351

1359

MS, RI

Geranic acid

0.1

  

1376

1379

MS, RI

Geranyl acetate

0.8

  

1382

1389

MS, RI

β-Elemene

  

0.4

1408

1417

MS, RI

E-Caryophyllene

0.1

 

1.1

1421

1431

MS, RI

β-Gurjunene

  

0.1

1443

1452

MS, RI

α-Humulene

  

0.1

1486

1495

MS, RI

2-Tridecanone

0.1

  

1490

1500

MS, RI

α-Muurolene

  

0.1

1503

1513

MS, RI

γ-Cadinene

  

0.1

1513

1522

MS, RI

δ-Cadinene

  

0.4

1540

1546

MS, RI

Elemol

  

5.3

1571

1582

MS, RI

Caryophyllene oxide

0.1

0.1

 

1595

1607

MS, RI

5-Epi-7-epi-α-eudesmol

  

0.3

1609

1622

MS, RI

10-Epi-γ-eudesmol

  

0.2

1609

1615

MS, RI

Selina-6-en-4-ol

0.4

  

1636

1640

MS, RI

Phenyl ethyl hexanoate

 

0.1

 

1623

1630

MS, RI

γ-Eudesmol

  

1.1

1626

1629

MS, RI

Eremoligenol

  

1.9

1634

1640

MS, RI

Hinesol

  

0.7

1643

1649

MS, RI

β-Eudesmol

  

1.2

1646

1652

MS, RI

α-Eudesmol

  

2.1

   

Yields

1.7

1.4

2.6

   

Total identified

95.2

93.4

98.4

  1. aKIexp = retention indices are determined using n-alkanes (C7-C17).
  2. bKIlit = retention indices of reference compounds from literature.
  3. cID = Identification methods; MS = comparison of the mass spectrum with those of the computer mass libraries, and Adams (2007); RI = comparison of calculated RI with those reported in the literature.
  4. dCompounds are listed in order of their retention time; the names and the percentages of main compounds are indicated in bold.
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