Table 4 Volatile compounds and their relative contents of Jingmai and Wuliang Pu-erh green tea

1

Benzaldehyde

0.11 ± 0.10a

0.10 ± 0.07a

2

1-Octen-3-ol

0.44 ± 0.35a

0.65 ± 0.44a

3

6-Methyl-5-heptene-2-one

0.08 ± 0.12a

0.14 ± 0.09a

4

2-Pentyl-furan

0.52 ± 0.23a

0.63 ± 0.10a

5

α-Phellandrene

0.12 ± 0.12a

0.06 ± 0.08a

6

α-Terpinene

0.12 ± 0.09a

0.06 ± 0.06a

7

D-Limonene

1.12 ± 0.47a

0.64 ± 0.22b

8

Benzyl alcohol

0.16 ± 0.11a

0.21 ± 0.13a

9

(E)-3,7-Dimethyl-1,3,6-octatriene

0.11 ± 0.10a

0.20 ± 0.05b

10

Phenyl acetaldehyde

0.11 ± 0.07a

0.21 ± 0.18b

11

Ocimene

0.32 ± 0.09a

0.42 ± 0.13a

12

γ-Terpinene

0.27 ± 0.11a

0.21 ± 0.06a

13

(E)-2-Octen-1-ol

0.23 ± 0.23a

0.38 ± 0.32a

14

Linalool oxide I

0.75 ± 0.25a

1.75 ± 0.29b

15

Linalool oxide II

2.24 ± 0.80a

3.21 ± 0.96b

16

Linalool

7.86 ± 2.44a

20.56 ± 3.47a

17

Hotrienol

1.50 ± 1.30a

1.32 ± 0.48a

18

Phenylethyl alcohol

0.07 ± 0.10a

0.65 ± 0.83b

19

Linalool oxide IV

0.57 ± 0.23a

1.62 ± 0.32b

20

Naphthalene

0.23 ± 0.14a

0.23 ± 0.17a

21

α-Terpineol

2.43 ± 0.84a

2.16 ± 0.53a

22

Methyl salicylate

0.99 ± 1.19a

2.91 ± 0.76a

23

Safranal

0.29 ± 0.07a

0.35 ± 0.10a

24

β-Cyclocitral

0.59 ± 0.20a

0.66 ± 0.24a

25

Nerol

0.46 ± 0.15a

0.77 ± 0.17b

26

Geraniol

1.58 ± 0.59a

5.41 ± 1.65b

27

Indole

0.13 ± 0.22a

0.53 ± 0.34b

28

Tridecane

0.17 ± 0.07a

0.18 ± 0.08a

29

1-Methyl-naphthalene

0.40 ± 0.10a

0.18 ± 0.13b

30

1,2,3-Trimethoxybenzene

0.56 ± 0.41a

0.44 ± 0.25a

31

2,6-Dimethoxyphenol

0.15 ± 0.22a

0.32 ± 0.20a

32

cis-Jasmone

0.86 ± 0.61a

1.30 ± 0.56a

33

Tetradecane

1.48 ± 0.31a

0.64 ± 0.09b

34

β-Caryophyllene

1.00 ± 1.57a

0.39 ± 0.22a

35

α-Ionone

1.22 ± 0.29a

0.77 ± 0.18b

36

Geranyl acetone

2.08 ± 0.42a

1.96 ± 0.46a

37

β-Ionone

5.28 ± 1.45a

3.44 ± 0.64b

38

Pentadecane

0.84 ± 0.30a

0.53 ± 0.13a

39

Dibenzofuran

1.25 ± 0.77a

0.53 ± 0.09b

40

α-Farnesene

0.30 ± 0.40a

1.19 ± 0.87b

41

Dihydroactinidiolide

6.81 ± 1.53a

3.80 ± 0.55b

42

Nerolidol

1.10 ± 0.25a

1.94 ± 0.69b

43

Fluorene

1.63 ± 0.70a

0.88 ± 0.15a

44

Cedrol

1.18 ± 0.65a

2.76 ± 0.98b

45

Hexadecane

1.76 ± 0.62a

1.10 ± 0.29a

46

α-Cadinol

1.06 ± 0.19a

0.83 ± 0.17b

47

2,2′,5,5′-Tetramethyl-1,1′-biphenyl

0.70 ± 0.19a

0.32 ± 0.10a

48

2-Methyl-hexadecane

0.50 ± 0.09a

0.11 ± 0.23a

49

Heptadecane

0.97 ± 0.30a

0.82 ± 0.31a

50

2,6,10,14-Tetramethyl pentadecane

2.35 ± 0.60a

1.45 ± 0.79a

51

Anthracene

0.92 ± 1.17a

0.50 ± 0.18a

52

Octadecane

0.69 ± 0.50a

0.30 ± 0.11a

53

2,6,10,14-Tetramethyl hexadecane

0.89 ± 0.33a

0.64 ± 0.42a

54

Isopropyl myristate

0.08 ± 0.12a

0.11 ± 0.12a

55

Caffeine

9.10 ± 2.82a

5.07 ± 1.55a

56

Phytone

4.58 ± 2.08a

2.31 ± 0.83a

57

Farnesyl acetone

1.21 ± .32a

0.26 ± 0.24b

58

Hexadecanoic acid methyl ester

1.16 ± 0.69a

0.51 ± 0.34b

59

Isophytol

0.47 ± 0.19a

0.35 ± 0.11a

60

Hexadecanoic acid

1.83 ± 1.79a

3.75 ± 1.47a

61

Methyl linoleate

0.26 ± 0.23a

0.19 ± 0.09a

62

Methyl linolenate

0.57 ± 0.34a

0.46 ± 0.28a

63

Phytol

7.71 ± 4.14a

6.20 ± 1.93a

Alcohols

29.81a

50.77b

Hydrocarbons

16.89a

11.05a

Ketones

15.31a

10.18b

Esters

3.06a

4.18a

Aldehydes

1.10a

1.32a

Nitrogen compounds

9.23a

5.60a

Lactones

6.81a

3.80b

Others

4.31a

5.67a

Identified

86.52

92.57