Table 1 GC-MS chemical composition (%) of the essential oil from P. racemosa grown in egypt.

1.

α-Pinene

7.17

C₁₀H₁₆

931

932

0.32

RI, MS

^18,54

2.

β-Myrcene

8.94

C₁₀H₁₆

992

992

12.88

RI, MS

^4,45

3.

α-Phellandrene

9.29

C₁₀H₁₆

1003

1005

0.54

RI, MS

^40,43

4.

p-Cymene

9.92

C₁₀H₁₄

1024

1026

1.12

RI, MS

⁴⁶

5.

D-Limonene

10.06

C₁₀H₁₆

1028

1029

8.35

RI, MS

¹⁸

6.

(E)-β-Ocimene

10.68

C₁₀H₁₆

1048

1050

0.20

RI, MS

⁴¹

7.

β-Linalool

12.28

C₁₀H₁₈O

1100

1100

2.14

RI, MS

¹⁸

8.

Terpinen-4-ol

14.67

C₁₀H₁₈O

1178

1177

0.19

RI, MS

⁴⁵

9.

Chavicol

17.05

C₉H₁₀O

1258

1259

1.48

RI, MS

¹⁸

10.

Eugenol

20.08

C₁₀H₁₂O₂

1366

1365

70.87

RI, MS

⁵¹

11.

α-Copaene

20.46

C₁₅H₂₄

1379

1376

0.13

RI, MS

¹¹

12.

(E)-β-Caryophyllene

21.65

C₁₅H₂₄

1423

1423

0.28

RI, MS

⁵¹

13.

α-Murolene

23.13

C₁₅H₂₄

1480

1481

0.15

RI, MS

⁴⁵

14.

3-Cyclohexene-1-carboxaldehyde, 4-(4-methyl-3-pentenyl)-

24.20

C₁₃H₂₀O

1509

1522

0.29

RI, MS

^41,46

15.

δ-Cadinene

24.33

C₁₅H₂₄

1527

1530

0.50

RI, MS

³⁰

16.

(E)-β-Caryophyllene oxide

25.88

C₁₅H₂₄O

1590

1590

0.16

RI, MS

¹⁸

17.

τ-Cadinol

27.27

C₁₅H₂₆O

1648

1648

0.16

RI, MS

⁴¹

Total identified

99.76%

Phenylpropanoids

72.35%

Hydrocarbon monoterpenes

23.41%

Oxygenated monoterpenes

2.33%

Hydrocarbon sesquiterpenes

1.06%

Oxygenated sesquiterpenes

0.32%

Others

0.29