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Table 1 Percentage composition of essential oil of Zingiber zerumbet

From: Standardized ethanol extract, essential oil and zerumbone of Zingiber zerumbet rhizome suppress phagocytic activity of human neutrophils

Compound

Percentage composition (%)

Kovat Indexc

Method of Identification

α-Pinene

1.27

939

a,b,c

Camphene

5.36

957

a,b,c

α-Terpinene

0.36

1018

a,b,c

1,8-Cineole

1.70

1032

a,b,c

β-Ocimene

1.46

1038

a,b,

Nonen-1-ol

1.75

1158

a,b,

Terpinen-4-ol

1.53

1178

a,b,c

β-Caryophyllene

0.92

1420

a,b,c

α-Humulene

12.24

1458

a,b,c

(E)-Nerolidol

1.44

1564

a,b

Caryophyllene oxide

2.05

1581

a,b

Humulene epoxide

4.96

1608

a,b

Caryophylla-4 (14),8 (15)-dien-5.alpha.-ol

3.86

1642

a,b

Calamenene

0.49

1662

a,b

α-Bisabolol

1.03

1674

a,b

Farnesol

0.81

1708

a,b

Zerumbone

58.44

1734

a,b,c

  1. a: analysis by mass fragmentation pattern in gas chromatography mass spectrometry (GC-MS)
  2. b: Kovat indices on a DB5 column (1 μm thickness, 30.0 m length, 0.25 mm diameter)
  3. c: co-chromatography with authentic sample