Table 1 Chemical profile of Polyalthia suberosa volatile oils in four different seasons

1

7.32

α-Pinene

C₁₀H₁₆

917

917

3.17

1.28

0.99

0.03

RI, MS

2

7.75

Camphene

C₁₀H₁₆

931

930

0.12

-

-

-

RI, MS

3

8.554

Sabinene

C₁₀H₁₆

961

961

-

0.16

2.77

0.03

RI, MS

4

8.65

β-Pinene

C₁₀H₁₆

964

964

8.59

3.4

2.13

0.14

RI, MS

5

9.125

β-Myrcene

C₁₀H₁₆

981

981

1.36

0.56

0.65

-

RI, MS

6

9.67

β-cis-Ocimene

C₁₀H₁₆

1001

1002

-

-

2.47

-

RI, MS

7

9.88

2- Carene

C₁₀H₁₆

1007

1007

-

-

1.18

-

RI, MS

8

10.025

2,6-Dimethyl nonane

C₁₁H₂₄

1012

1022

-

-

0.32

-

RI, MS

9

10.15

p-Cymene

C₁₀H₁₄

1016

1016

0.37

-

0.35

0.02

RI, MS

10

10.266

D-Limonene

C₁₀H₁₆

1020

1020

2.63

0.74

24.7

0.07

RI, MS

11

10.9

β-Ocimene

C₁₀H₁₆

1040

1040

1.04

2.77

1.11

0.03

RI, MS

12

11.105

5-Methyl decane

C₁₁H₂₄

1047

1056

-

-

0.89

-

RI, MS

13

11.21

γ-Terpinene

C₁₀H₁₆

1050

1050

0.44

-

2.26

-

RI, MS

14

12.155

Terpinolene

C₁₀H₁₆

1081

1081

0.2

-

0.64

-

RI, MS

15

12.5

Linalool

C₁₀H₁₈O

1092

1092

-

-

-

0.25

RI, MS

16

12.595

Nonanal

C₉H₁₈O

1095

1094

0.53

-

-

0.03

RI, MS

17

14.9

Thujol

C₁₀H₁₈O

1169

1165

-

-

-

0.29

RI, MS

18

15.335

α-Terpineol

C₁₀H₁₈O

1183

1183

-

-

-

0.08

RI, MS

19

16.17

β-Cyclocitral

C₁₀H₁₆O

1211

1210

0.17

-

-

-

RI, MS

20

16.47

Citronellol

C₁₀H₂₀O

1221

1221

-

-

-

0.06

RI, MS

21

17.25

β-Cyclohomocitral

C₁₁H₁₈O

1248

1251

0.11

-

-

-

RI, MS

22

17.36

2,4-Dimethylundecane

C₁₃H₂₈

1252

1253

-

-

0.35

-

RI, MS

23

17.82

3-Methyldodecane

C₁₃H₂₈

1268

1270

-

0.11

1.02

-

RI, MS

24

18.045

Borneol acetate

C₁₂H₂₀O₂

1277

1277

1.24

0.73

-

0.13

RI, MS

25

18.205

Dihydroedulan IIA

C₁₃H₂₂O

1282

1284

0.97

-

0.73

0.97

RI, MS

26

19.145

2,3,5,8-Tetramethyldecane

C₁₄H₃₀

1315

1318

-

-

0.31

-

RI, MS

27

19.215

E-Methyl geranate

C₁₁H₁₈O₂

1317

1315

-

-

-

0.05

RI, MS

28

19.26

IsoDihydrocarveol acetate

C₁₂H₂₀O₂

1319

1322

0.62

-

-

-

RI, MS

29

19.575

δ-Elemene

C₁₅H₂₄

1327

1327

0.3

0.11

-

0.09

RI, MS

30

19.92

α-Cubebene

C₁₅H₂₄

1342

1342

1.48

0.4

0.32

0.19

RI, MS

31

20.05

1,1,6-Trimethyl-1,2-dihydronaphthalene

C₁₃H₁₆

1345

1344

0.21

-

-

-

RI, MS

32

20.24

cis-Carvyl acetate

C₁₂H₁₈O₂

1353

1352

0.35

-

-

-

RI, MS

33

20.4

Cyclosativene

C₁₅H₂₄

1359

1358

0.72

0.14

0.29

0.09

RI, MS

34

20.68

α-Copaene

C₁₅H₂₄

1368

1368

15.49

4.38

5.66

2.25

RI, MS

35

20.86

(E)-β-Damascenone

C₁₃H₁₈O

1374

1380

0.87

-

0.27

-

RI, MS

36

21.1

β-Elemene

C₁₅H₂₄

1384

1384

2.26

0.73

0.44

5.55

RI, MS

37

21.545

cis-β-Caryophyllene

C₁₅H₂₄

1398

1400

0.38

-

2.05

0.49

RI, MS

38

21.75

5,5-Diethylundecane

C₁₅H₃₂

1406

1408

-

-

0.26

-

RI, MS

39

21.925

E-β-caryophyllene

C₁₅H₂₄

1410

1411

14.42

5.55

5.17

10.21

RI, MS

40

22.095

α-Ionone

C₁₃H₂₀O

1420

1420

0.68

-

-

0.46

RI, MS

41

22.225

γ-Elemene

C₁₅H₂₄

1425

1425

-

-

-

0.19

RI, MS

42

22.34

Aromadendrene

C₁₅H₂₄

1429

1429

0.35

-

-

-

RI, MS

43

22.37

α-Guaiene

C₁₅H₂₄

1430

1433

-

-

-

0.53

RI, MS

44

22.635

Nerylacetone

C₁₃H₂₂O

1440

1445

0.87

0.22

-

-

RI, MS

45

22.815

α-Humulene

C₁₅H₂₄

1445

1445

5.96

2.49

3.19

6.9

RI, MS

46

22.95

Neoclovene

C₁₅H₂₄

1453

1453

0.33

-

-

-

RI, MS

47

23.11

2,5-di-tert-Butyl-p-quinone

C₁₄H₂₀O₂

1459

1466

-

-

-

0.31

RI, MS

48

23.295

γ-Gurjunene

C₁₅H₂₄

1467

1467

1.06

-

1.04

1.34

RI, MS

49

23.53

Germacrene D

C₁₅H₂₄

1473

1473

1.08

1.53

-

5.01

RI, MS

50

23.54

2-Methyl tetradecane

C₁₅H₃₂

1476

1467

-

-

0.53

-

RI, MS

51

23.6

3-Methyl tetradecane

C₁₅H₃₂

1479

1472

0.31

2.82

-

RI, MS

52

23.68

β-Selinene

C₁₅H₂₄

1482

1482

2.16

-

-

2.01

RI, MS

53

23.95

Bicyclogermacrene

C₁₅H₂₄

1492

1492

4.89

2.84

1.58

5.57

RI, MS

54

24.025

α-Farnesene

C₁₅H₂₄

1495

1496

-

1.5

-

-

RI, MS

55

24.085

δ-Guaiene

C₁₅H₂₄

1497

1500

0.32

-

-

1.18

RI, MS

56

24.28

2,4-di-t-Butylphenol

C₁₄H₂₂O

1505

1502

-

-

0.47

0.45

RI, MS

57

24.37

γ-Cadinene

C₁₅H₂₄

1509

1509

0.25

-

-

0.42

RI, MS

58

24.595

δ-Cadinene

C₁₅H₂₄

1514

1514

4.93

1.86

2.46

4.04

RI, MS

59

24.825

Cadine-1,4-diene

C₁₅H₂₄

1524

1524

0.07

-

-

0.24

RI, MS

60

24.81

2-Methyl pentadecane

C₁₆H₃₄

1526

1533

-

-

0.67

-

RI, MS

61

24.965

α-Cadinene

C₁₅H₂₄

1532

1533

-

-

-

0.25

RI, MS

62

25.12

α-Calacorene

C₁₅H₂₀

1535

1536

0.17

-

-

0.34

RI, MS

63

25.255

Elemol

C₁₅H₂₆O

1543

1543

-

-

-

0.27

RI, MS

64

25.375

Ledol

C₁₅H₂₆O

1548

1549

0.2

-

-

0.5

RI, MS

65

25.52

E-Nerolidol

C₁₅H₂₆O

1554

1554

-

0.8

-

1.81

RI, MS

66

25.87

1,3,7,11-Tridecatetraene, 4,8,12-trimethyl-, (3E,7E)

C₁₆H₂₆

1567

1573

-

-

-

0.28

RI, MS

67

26.05

Spathulenol

C₁₅H₂₄O

1570

1570

0.3

1.75

0.86

RI, MS

68

26.17

Caryophyllene oxide

C₁₅H₂₄O

1575

1575

3.32

1.28

1.12

6.27

RI, MS

69

36.375

Globulol

C₁₅H₂₄O

1584

1584

0.47

-

-

0.6

RI, MS

70

26.544

Humulene epoxide I

C₁₅H₂₄O

1594

1593

-

-

-

0.22

RI, MS

71

26.66

Virdiflorol

C₁₅H₂₆O

1598

1598

-

-

-

0.39

RI, MS

72

26.8

Humulene epoxide II

C₁₅H₂₄O

1604

1604

0.82

0.46

0.4

1.48

RI, MS

73

27.095

Hexadecane

C₁₆H₃₄

1617

1600

-

-

0.31

-

RI, MS

74

27.225

1-epi-Cubenol

C₁₅H₂₆O

1622

1625

-

-

-

0.39

RI, MS

75

27.553

τ-Cadinol

C₁₅H₂₆O

1637

1637

-

-

-

0.93

RI, MS

76

27.65

δ-Cadinol

C₁₅H₂₆O

1641

1641

-

-

-

0.42

RI, MS

77

28.118

1-Heptadecene

C₁₇H₃₄

1661

1673

-

-

-

0.59

RI, MS

78

28.14

Hexadecane, 2-methyl

C₁₇H₃₆

1662

1666

-

-

0.21

-

RI, MS

79

28.28

14-Hydroxy-9-epi-(E)-caryophyllene

C₁₅H₂₄O

1668

1668

-

-

-

0.6

RI, MS

80

28.545

3-Methyl hexadecane

C₁₇H₃₆

1680

1677

-

-

0.28

-

RI, MS

81

28.628

Heptadecane

C₁₇H₃₆

1684

1700

-

-

0.32

0.57

RI, MS

82

28.835

6,6-Diethyltetradecane

C₁₈H₃₈

1692

1695

-

-

0.98

-

RI, MS

83

29.055

1-Pentadecanal

C₁₅H₃₀O

1702

1702

-

-

-

0.06

RI, MS

84

29.82

7-Methyl heptadecane

C₁₈H₃₈

1735

1745

-

-

0.38

-

RI, MS

85

29.84

Mintsulfide

C₁₅H₂₄S

1736

1741

-

-

-

0.21

RI, MS

86

30.1

α-Cyperone

C₁₅H₂₂O

1748

1746

-

-

-

0.25

RI, MS

87

30.225

4-Methyl heptadecane

C₁₈H₃₈

1753

1749

-

-

-

0.06

RI, MS

88

30.858

Octadecane

C₁₈H₃₈

1780

1800

-

-

-

0.41

RI, MS

89

31.055

Phytane

C₂₀H₄₂

1789

1795

-

-

-

0.12

RI, MS

90

31.315

Hexadecanal

C₁₆H₃₂O

1800

1800

-

-

-

0.07

RI, MS

91

31.835

Hexahydrofarnesyl acetone

C₁₈H₃₆O

1828

1825

0.23

0.28

0.39

0.47

RI, MS

92

32.9

Nonadecane

C₁₉H₄₀

1880

-

-

-

0.31

0.25

MS only

93

33.59

Palmitic acid methyl ester

C₁₇H₃₄O₂

1909

1910

3.16

0.25

-

1.05

RI, MS

94

34.37

Palmitic acid

C₁₆H₃₂O₂

1947

1946

-

3.39

-

0.13

RI, MS

95

35.0

3-Methyl nonadecane

C₂₀H₄₂

1977

1974

-

-

0.84

0.36

RI, MS

96

35.5

Octadecanal

C₁₈H₃₆O

2001

2010

-

-

-

0.06

RI, MS

97

35.55

Verticilla-4(20),7,11-triene

C₂₀H₃₂

2004

2004

-

0.29

-

-

RI, MS

98

36.88

Methyl octadeca-9,12-dienoate

C₁₉H₃₄O₂

2076

2075

1.2

-

-

-

RI, MS

99

36.93

3-Methyleicosane

C₂₁H₄₄

2079

2072

-

0.25

1.77

0.55

RI, MS

100

37.06

Oleic acid methyl ester

C₁₉H₃₆O₂

2086

2086

2.88

-

-

0.6

RI, MS

101

37.335

trans-Phytol

C₂₀H₄₀O

2101

2103

0.59

1.13

0.62

5.2

RI, MS

102

37.435

Heneicosane

C₂₁H₄₄

2107

2100

-

-

0.28

-

RI, MS

103

37.46

Methyl stearate

C₁₉H₃₈O₂

2108

2109

0.25

-

-

-

RI, MS

104

37.615

5-Ethyl-5-methylnonadecane

C₂₂H₄₆

2117

2111

-

-

0.59

-

RI, MS

105

37.81

Oleic acid

C₁₈H₃₄O₂

2127

2120

-

0.47

-

-

RI, MS

106

38.22

5-Methyl heneicosane

C₂₂H₄₆

2150

2151

-

-

0.25

0.06

RI, MS

107

38.282

Isoincensole

C₂₀H₃₄O₂

2153

2152

-

1.49

-

-

RI, MS

108

38.73

3-Methyl heneicosane

C₂₂H₄₆

2178

2175

0.21

-

3

0.44

RI, MS

109

40.5

3-Methyl docosane

C₂₃H₄₈

2276

2275

0.36

0.41

3.7

0.79

RI, MS

110

42.2

2-Methyl tricosane

C₂₄H₅₀

2369

2365

0.26

0.32

2.92

0.53

RI, MS

111

42.86

3,11-Dimethyl tricosane

C₂₅H₅₂

2405

2405

-

-

-

0.05

RI, MS

112

43.9

3-Methyl tetracosane

C₂₅H₅₂

2472

2473

0.51

0.8

2.99

1.34

RI, MS

113

45.49

3-Methyl pentaocsane

C₂₆H₅₄

2574

2573

0.14

0.19

1.26

0.49

RI, MS

114

47.015

3-Methyl hexacosane

C₂₇H₅₆

2672

2672

0.27

0.74

1.37

0.98

RI, MS

115

48.46

2-Methyl heptacosane

C₂₈H₅₈

2765

2761

-

0.36

0.24

0.22

RI, MS

116

49.0

Squalene

C₃₀H₅₀

2800

2808

-

0.27

0.42

0.14

RI, MS

117

49.875

2-Methyl octacosane

C₂₉H₆₂

2856

2858

0.19

1.73

0.75

0.48

RI, MS

118

51.255

7-Methyl nonacosane

C₃₀H₆₂

2944

2945

-

-

-

0.08

RI, MS

119

51.725

Campesterol

C₂₈H₄₈O

2974

-

-

1.72

-

-

MS only

120

51.99

24-Norursa-3,9(11),12-triene

C₂₉H₄₄

2991

-

-

2.45

-

-

MS only

121

52.185

24-Norursa-3,12-diene

C₂₉H₄₆

3004

-

-

6.01

-

-

MS only

122

52.83

24-Noroleana-3,12-diene

C₂₉H₄₆

3045

3057

-

12.92

-

-

RI, MS

123

52.97

Stigmasta-3,5-diene

C₂₉H₄₈

3054

-

-

9.58

-

-

MS only

124

56.39

γ-Sitosterol

C₂₉H₅₀O

3274

3290

-

0.6

-

-

RI, MS

125

56.82

24-Norursa-3,12-dien-11-one

C₂₉H₄₄O

3301

3351

-

3.75

-

-

MS only

Monoterpene hydrocarbons

18.79

9.13

39.25

0.32

Oxygenated Monoterpene

2.49

0.73

-

0.86

Sesquiterpene hydrocarbons

56.62

21.53

22.2

46.89

Oxygenated Sesquiterpene

5.34

4.57

1.91

15.46

Diterpene hydrocarocarbons

0.59

2.91

0.62

5.32

Non-terpenic compounds

1.94

5.22

29.92

8.53

Non-terpenic oxygenated compounds

8.02

4.11

-

2

Others

2.73

37.3

1.89

2.54

Total % identified

96.52

85.5

95.79

81.92