Table 2 Information of the 54 odor compounds analyzed by GC × GC–TOFMS

1

Hexanal

Herbal flavor, almond

4.5

66-25-1

2

Heptanal

Fishy

3.0

111-71-7

3

Benzaldehyde

Herbal flavor

4.5

100-52-7

4

2,4-Heptadienal

Fishy/oily

5.0

4313-03-5

5

2-Octenal

Irritant

n.a.

2548-87-0

6

Nonanal

Fruity, fragrance

n.a.

124-19-6

7

2,6-Nonadienal

Herbal flavor/cucumber

0.08

17587-33-6

8

Decanal

Orange flavor

n.a.

112-31-2

9

2,4-Decadienal

Oily

0.029

2363-88-4

10

2,6,6-Trimethyl-1-cyclohexene-1-carboxaldehyde

Sweet, fragrance

n.a.

432-25-7

11

Ethylbenzene

Plastic, oily, chemical

150.0

100-41-4

12

p-Xylene

Chemical

n.a.

106-42-3

13

1,4-Dichloro-benzene

Almond, sweet

4.5

106-46-7

14

1,3,5-Trichloro-2-methoxy-benzene

Musty

0.002

108-70-3

15

Bis(2-chloroisopropyl) ether

Medicinal odor

0.017

39638-32-9

16

Butanoic acid, propyl ester

Alcohol

n.a.

105-66-8

17

Indole

Stinky

0.1

120-72-9

18

3-Methyl-indole

Stinky

1.0

83-34-1

19

Ionone

Fragrance

0.007

8013-90-9

20

Tetramethyl pyrazine

Sour, fragrance

2.6

1124-11-4

21

Pyrazine

Fragrance

2.7

290-37-9

22

2-Methoxy-3-(2-methylethyl)-pyrazine/IPMP

Musty

0.0002

25773-40-4

23

2-Methoxy-3-(2-methylpropyl)-pyrazine/IBMP

Musty

0.001

24683-00-9

24

Pyridine

Amine, stinky

1.1

110-86-1

25

2-Methyl-phenol

Medicinal odor

14.7

95-48-7

26

4-Bromo-phenol

Medicinal odor

n.a.

106-41-2

27

3-Methyl-phenol

Medicinal odor

12.8

108-39-4

28

2-Nitro-phenol

Medicinal odor

11.0

88-75-5

29

2,6-Dimethyl-phenol

Medicinal odor, musty

11.0

576-26-1

30

2-Chloro-phenol

Chemical, musty, floral

0.088

95-57-8

31

Dimethyl sulfide

Rotten cabbage

1.0

75-18-3

32

Diethyl sulfide

Swampy, septic

n.a.

352-93-2

33

Dimethyl disulfide

Swampy, septic

0.03

624-92-0

34

Diisopropyl sulfide

Swampy, septic

n.a.

625-80-9

35

Propyl sulfide

Swampy, septic

0.0019

111-47-7

36

Diethyl disulfide

Swampy, septic

0.02

110-81-6

37

Dimethyl trisulfide

Swampy, septic

0.01

3658-80-8

38

Butyl sulfide

Swampy, septic

0.00189

544-40-1

39

Dipropyl disulfide

Swampy, septic

n.a.

629-19-6

40

Amyl sulfide

Swampy, septic

0.0011

872-10-6

41

Dibutyl disulfide

Swampy, septic

n.a.

629-45-8

42

Dipentyl disulfide

Swampy, septic

n.a.

112-51-6

43

Benzyl disulfide

Foul smell

n.a.

150-60-7

44

1-Pentanethiol

Rancid, stinky

n.a.

110-66-7

45

1-Heptanethiol

Rancid, stinky

n.a.

1639-09-4

46

1-Octanethiol

Rancid, stinky

n.a.

111-88-6

47

1-Nonanethiol

Rancid, stinky

n.a.

1455-21-6

48

Thiomorpholine

Fishy, stinky

n.a.

123-90-0

49

Thiazole

Foul smell

n.a.

288-47-1

50

Pentachlorothioanisole

Medicinal

n.a.

1825-19-0

51

Indane

Musk, fragrance

n.a.

496-11-7

52

Eucalyptol

Peppermint

n.a.

470-82-6

53

2-Methylisoborneol

Musty

0.01

2371-42-8

54

Geosmin

Earthy

0.004

19700-21-1