Skip to main content

Table 1 Chemical constituents of essential oil of Plectranthus glandulosus leaf

From: Effectiveness of binary combinations of Plectranthus glandulosus leaf powder and Hymenocardia acida wood ash against Sitophilus zeamais (Coleoptera: Curculionidae)

Compounds

% Composition

Hydrocarbonated monoterpenes

 

1R-α-Pinene

11.2

β-Pinene

11.5

(+)-4-Carene

0.3

3-Carene

8.7

β-Phellandrene

Tr

Paracymene

7.5

Limonene

2.5

γ-Terpinene

0.1

β-Thujene

0.2

2-Methyladamantane

0.8

(E)-β-Ocimene

0.3

(E)-4,8-Dimethyl-1,3,7-nonatriene

Tr

α-Terpinene

1.3

β-Myrcene

9.7

Hydrocarbonated sesquiterpenes

 

7-β-[H]-silphiperfol-5-ene

1.2

Silphin-1-ene

Tr

Silphiperfola-5,7(14)-diene

0.1

α-Copaene

2.7

Pethybrene

0.3

Modhephene

0.3

α-Isocomene

0.2

α-Curcumene

0.2

γ-Gurjumene

Tr

(Z,E)-α-Farnesene

2.5

β-Selinene

0.1

Oxygenated monoterpenes

 

α-Terpineol

10.8

O-Acetylthymol

0.8

Thymol

10.1

(E,E)-2,4-Decadienal

0.1

8,9-Dihydrothymol

Tr

Bornyl acetate

Tr

Neryl acetate

0.3

α-Terpenyle

0.1

(E)-β-Damascenone

0.4

β-Cyclocitral

0.1

4′-Methoxyvalerophenone

Tr

p-Methoxycumene

Tr

Oxygenated sesquiterpenes

 

Cubebol

Tr

β-Caryophyllene oxide

9.4

β-Oplopenone

Tr

Aromatic compounds

 

3,4-Xylenol

Tr

2-(2-Butynyl)-cyclohexanone

0.1

Acetophenone

5.5

Aldehydes

 

(E)-2-Nonanal

0.1

Undecanal

0.2

Decanal

0.1

Lauraldehyde

0.1

(E)-2-Decenal

0.1

Nonenal

0.3

Ketones

 

Decan-2-one

Tr

Tridecan-2-one

Tr

Ester

 

cis-hex-3-enyl-acetate

0.5

  1. Tr in trace (< 0.1)