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Table 4 Qualitative and quantitative compositions (%) of the essential oils from winter and summer leaves

From: Traits of seasonal dimorphism associated with adaptation to cold stress in Origanum dictamnus L. (Lamiaceae)

Components a

AI b

Winter leaves

Summer leaves

Identification c

α-Thujene

926

n.d.

0.4

AI, MS

α-Pinene

932

n.d.

0.3

AI, MS, Co-GC

Camphene

946

n.d.

0.2

AI, MS

Sabinene

972

n.d.

0.1

AI, MS

β-Pinene

974

n.d.

0.1

AI, MS, Co-GC

1-Octen-3-ol

980

0.2

0.1

AI, MS

3-Octanone

988

0.3

0.2

AI, MS

β-Myrcene

991

n.d.

0.6

AI, MS, Co-GC

3-Octanol

997

0.5

0.1

AI, MS

α-Phellandrene

1002

n.d.

0.1

AI, MS

Iso-Sylvestrene

1007

n.d.

Tr

AI, MS

α-Terpinene

1017

0.1

1.7

AI, MS

p -Cymene

1024

59.2

18.5

AI, MS, Co-GC

Sylvestrene

1026

0.1

0.5

AI, MS

γ-Terpinene

1058

0.9

16.6

AI, MS, Co-GC

Cis-Sabinene hydrate

1067

2.1

0.8

AI, MS

Terpinolene

1087

n.d.

0.2

AI, MS

p-Cymenene

1088

0.3

n.d.

AI, MS

Trans-Sabinene hydrate

1095

0.5

0.2

AI, MS

Trans-Pinocarveol

1138

0.2

n.d.

AI, MS

Camphor

1142

0.4

n.d.

AI, MS, Co-GC

Trans-Verbenol

1142

0.4

n.d.

AI, MS

Borneol

1165

9.2

2.3

AI, MS, Co-GC

Terpinen-4-ol

1176

1.2

0.8

AI, MS, Co-GC

p-Cymen-8-ol

1184

1.9

0.2

AI, MS

α-Terpineol

1190

0.2

0.1

AI, MS

Cis-Dihydro carvone

1196

0.3

0.1

AI, MS

Cumin aldehyde

1240

0.9

n.d.

AI, MS

Carvacrol methyl ether

1244

0.1

n.d.

AI, MS

Thymoquinone

1250

5.1

n.d.

AI, MS

Bornyl acetate

1288

0.9

0.1

AI, MS, Co-GC

Thymol

1292

0.3

0.1

AI, MS, Co-GC

Carvacrol

1301

8.3

42.4

AI, MS

α-Cubebene

1349

n.d.

0.5

AI, MS

Carvacrol acetate

1374

0.8

n.d.

AI, MS

α-Ylangene

1375

0.5

n.d.

AI, MS

α-Copaene

1375

n.d.

4.1

AI, MS

β-Cubebene

1390

0.1

0.8

AI, MS

β-Caryophyllene

1421

0.8

3.7

AI, MS, Co-GC

Cis-Muurola-3,5-diene

1445

n.d.

0.1

AI, MS

α-Humulene

1454

n.d.

0.2

AI, MS, Co-GC

Cis-Cadina-1(6),4-diene

1462

n.d.

0.3

AI, MS

Germacrene D

1482

n.d.

0.2

AI, MS

Trans-Muurola-4(14),5-diene

1492

n.d.

0.1

AI, MS

γ-Amorphene

1495

n.d.

0.1

AI, MS

α-Muurolene

1500

n.d.

0.1

AI, MS

δ-Amorphene

1509

n.d.

0.1

AI, MS

Germacrene A

1510

0,1

n.d.

AI, MS

γ-Cadinene

1516

n.d.

0.2

AI, MS

Trans-Calamanene

1525

0,1

n.d.

AI, MS

δ- Cadinene

1525

0,1

1.6

AI, MS

Trans-Cadina-1,4-diene

1533

n.d.

0.1

AI, MS

α-Cadinene

1539

n.d.

0.1

AI, MS

Caryophyllene oxide

1583

2.7

0.5

AI, MS, Co-GC

1,10-di-epi-Cubenol

1616

n.d.

0.2

AI, MS

TOTAL

 

98.8

99.8

 

Essential oil yield (%)

 

1.05

2.78

 
  1. aCompounds listed in order of elution from an HP-5 MS capillary column; bAI: Arithmetic indices as determined on a HP-5 MS capillary column using a homologous series of n-alkanes (C9-C25); cIdentification method: AI = Arithmetic index; MS = mass spectrum; Co-GC = coinjection with authentic compound. Concentrations below 0.05% are marked as Tr (traces); n.d.: not detected.