Table 1 Quantitative descriptors of 2D peaks abundance is reported as 2D normalized volumes % and referred to the TIC current signal; data is the mean of six biological replicates. As expected, the major leaf compound is menthofuran followed by high percentages of its precursor pulegone

(E)-2-Hexenal

11.69

1.26

859

854

0.01

nd

nd

(E)-Hex-3-ene-1-ol

11.75

1.64

860

851

0.04

0.06

0.05

α-Thujene

15.42

0.72

927

931

0.27

0.18

0.20

α-Pinene

15.75

0.76

933

939

1.01

0.38

0.31

Camphene

16.62

0.8

949

953

0.12

0.01

0.02

β-Pinene

18.02

0.88

974

979

1.35

0.33

0.58

1-Octene-3-ol

18.22

1.6

978

978

0.05

0.39

0.15

Sabinene

18.22

0.88

978

975

0.41

0.87

0.97

Myrcene

18.89

0.93

990

991

0.64

0.30

0.39

3-Octanol

19.15

1.52

995

993

0.05

0.17

0.09

α-Phellandrene

19.49

0.84

1001

1005

0.04

nd

nd

(E)-Hex-3-enyl-acetate

19.82

1.3

1007

1007

0.02

nd

nd

α-Terpinene

20.42

0.97

1017

1018

0.1

0.02

0.02

p-Cymene

20.95

1.14

1027

1026

0.11

0.13

0.12

Limonene

21.22

1.14

1031

1029

1.21

0.86

1.04

1,8-Cineole

21.29

1.09

1033

1031

0.03

6.12

9.64

(Z)-β-ocimene

22.22

1.01

1049

1040

0.06

nd

nd

γ-Terpinene

22.75

1.05

1058

1062

0.17

0.05

0.05

Cis-Sabinene hydrate

23.42

1.6

1070

1068

0.12

0.00

0.01

α-Terpinolene

24.69

1.01

1092

1088

0.09

0.06

0.02

p-Cymenene

24.75

1.3

1093

1089

0.01

nd

nd

2-Nonanol

25.02

1.56

1098

1098

0.03

nd

nd

Linalool

25.29

1.68

1102

1097

1.33

0.37

0.74

Nonanal

25.55

1.52

1107

1098

0.06

0.10

0.04

Allo-ocimene

27.02

1.18

1133

1129

0.03

nd

nd

Unknown#1 (MW152)

27.55

1.3

1142

nn

Nd

0.96

1.26

Unknown#2 (MW152)

27.69

2.06

1144

1140

Nd

1.87

1.01

Menthofuran

29.09

1.39

1169

1164

47.82

23.04

25.71

Isomenthone

29.15

1.77

1170

1164

2.32

1.93

5.74

Unknown#3 (MW152)

29.69

1.6

1179

nn

0.0001

0.18

0.17

α-Terpineol

30.69

1.85

1197

1189

3.71

1.11

2.08

decanal

31.42

1.56

1210

1204

0.06

0.04

0.02

4,7-dimethyl-benzofuran

31.89

1.85

1218

nn

0.13

0.08

0.12

2-α-Hydroxy-1,8-cineole

32.42

2.4

1228

1228

Nd

4.88

3.81

Unknown#4 (MW152)

32.49

2.48

1229

nn

0.14

nd

nd

δ-terpineol

33.22

1.35

1243

1217

0.01

0.31

0.69

3-α-Hydroxy-1,8-cineol

33.35

2.53

1245

1246

0.0001

17.27

11.07

Pulegone

33.49

1.85

1248

1237

17.52

2.47

5.36

3-β-Hydroxy-1,8-cineol

33.55

2.44

1249

1259

Nd

1.57

1.23

Unknown#5 (MW170)

33.89

2.15

1255

1232

Nd

0.60

0.23

Piperitone

34.09

2.36

1259

1252

0.02

nd

nd

9-OH cineole

34.55

2.23

1267

1267

Nd

3.57

1.69

Unknown#8 (MW164)

39.35

2.48

1358

nn

Nd

0.23

0.21

α-Cubebene

39.42

1.26

1359

1351

0.03

nd

nd

α -Copaene

40.55

1.26

1381

1376

0.02

nd

nd

β-Bourbonene

41.35

1.35

1396

1384

0.01

nd

nd

β-Elemene

41.62

1.39

1401

1391

0.05

nd

nd

Trans-Jasmone

41.89

2.31

1407

1388

0.07

nd

nd

Unknown#9 (MW166)

41.95

3.03

1408

nn

0.0001

1.04

0.91

α-Gurjunene

42.62

1.3

1422

1409

0.17

nd

nd

β-Cariophyllene

43.15

1.52

1432

1419

0.67

0.24

0.22

Trans-aromadendrene

43.89

1.39

1447

1439

0.07

nd

nd

α-Humulene

44.82

1.47

1466

1454

0.05

nd

nd

Alloaromadendrene

45.29

1.47

1476

1461

0.06

nd

nd

α-Amorphene

45.89

1.39

1488

1485

0.08

nd

nd

Germacrene D

46.22

1.6

1495

1485

0.09

nd

nd

α-Muurolene

46.75

1.47

1506

1499

0.06

nd

nd

Bicyclogermacrene

46.89

1.52

1509

1494

0.25

nd

nd

γ-Cadinene

47.69

1.43

1526

1513

0.34

0.28

0.28

δ-Cadinene

48.09

1.43

1534

1524

0.25

0.13

0.17

Cadina-1,4-diene

48.55

1.47

1544

1534

0.02

nd

nd

α-cadinene

48.82

1.47

1550

1538

0.07

0.02

0.01

Germacrene D-4-ol

50.35

2.1

1583

1576

0.03

nd

nd

β-Eudesmol

51.29

2.1

1620

1649

0.02

nd

nd

α-cadinol

53.55

1.98

1651

1653

0.02

nd

nd