Table 6 Volatile composition of the Headspace GC–MS analysis of ginger rhizomes.

Monoterpene hydrocarbons

   1.

2.402

\(\alpha \)-Pinene

6.73

   2.

2.747

Camphene

25.13

   3.

3.943

\(\beta \)-Myrcene

3.51

   4.

4.511

d-limonene

4.3

   5.

4.684

Sabinene

30.64

Total monoterpene hydrocarbons

70.31

Monoterpene ester

   6.

3.151

Linalyl acetate

0.5

Total monoterpene esters

0.5

Oxygenated monoterpenes

   7.

4.958

Eucalyptol (1,8-cineole)

2.06

   8.

17.229

cis-Verbenol

0.88

Total oxygenated monoterpenes

2.94

Aldehydes

   9.

6.783

Octanal

1.11

   10.

7.562

2-Heptenal, (E)-

0.79

   11.

9.532

Nonanal (aldehyde C9)

2.16

   12.

12.529

Decanal

0.53

   13.

16.341

2-Decenal, (E)-

1.73

   14.

20.607

2,4-Decadienal, (E,Z)-

1.28

Total aldehdes

7.6

Alcohols

   15.

10.329

2-Heptyn-1-ol

0.5

   16.

21.858

1-Octanol, 2-butyl-

3.26

Total alcohols

3.76

Sesquiterpene hydrocarbon

   17.

11.937

Aromandendrene

0.7

   18.

12.329

\(\alpha \)-Copaene

0.72

   19.

18.625

Zingiberene

7.94

   20.

18.776

\(\beta \)-Bisabolene

1.42

   21.

19.519

\(\alpha \)-Farnesene

1.03

   22.

19.821

Ylangene

2.5

Total sesquiterpene hydrocarbon

12.89

Ketones

23.

15.38

2-Undecanone

0.58

Total ketones

0.58