Table 1 Effects of mixed ensilage on the VOCs of terpenes in MCR.

1

(+)-α-Pinene

7785-70-8

0.19 ± 0.02

ND

ND

ND

ND

2

Cyclone

508-32-7

0.17 ± 0

ND

ND

ND

ND

3

Linalool

78-70-6

0.57 ± 0.01b

0.95 ± 0.05a

0.64 ± 0.01b

0.97 ± 0.1a

0.92 ± 0.06a

4

Terpinen-4-ol

562-74-3

0.47 ± 0.11b

ND

ND

ND

0.73 ± 0.07a

5

Copaene

3856-25-5

0.08 ± 0.04

ND

ND

ND

ND

6

beta-Elemene

515-13-9

0.18 ± 0.11a

2.9 ± 0.01b

2.4 ± 0.28c

2.13 ± 0.08c

2.28 ± 0.13c

7

(-)-alpha-Gurjunene

489-40-7

0.79 ± 0.04a

0.7 ± 0.05a

0.45 ± 0.03b

ND

0.69 ± 0.03a

8

Caryophyllene

87-44-5

14.67 ± 0.45a

10.40 ± 0.36b

8.97 ± 0.47c

9.22 ± 0.64bc

10.51 ± 0.36b

9

cis-a-Bergamotene

18252-46-5

0.47 ± 0.02ab

0.51 ± 0.02a

0.3 ± 0.01cd

0.25 ± 0.01d

0.38 ± 0.06bc

10

cis-β-Farnesene

28973-97-9

9.46 ± 0.18a

8.27 ± 1.03ab

8.54 ± 0.28ab

6.64 ± 0.5b

7.72 ± 0.56ab

11

2-Epi-trans-β-caryophyllene

68832-35-9

0.24 ± 0.03

ND

ND

ND

ND

12

(1e,4e)-Germacrene b

15423-57-1

0.9 ± 0.03

ND

ND

ND

ND

13

(1s,2e,6e,10r)-3,7,11,11-Tetramethylbicyclo[8.1.0]undeca-2,6-diene

24703-35-3

0.6 ± 0.06c

ND

1.62 ± 0.12a

1.21 ± 0.02b

ND

14

ß-Longipinene

41432-70-6

0.24 ± 0.09b

ND

ND

ND

ND

15

2-Carene

554-61-0

0.17 ± 0.02A

ND

ND

0.19 ± 0.01

ND

16

Naphthalene, 1,2,3,5,6,7,8,8a-octahydro-1,8a-dimethyl-7-(1-methylethenyl)-, [1s-(1a,7a,8aa)]-

10219-75-7

0.09 ± 0.09b

0.27 ± 0.1a

0.15 ± 0.01ab

ND

ND

17

(-)-β-Pinene

18172-67-3

3.01 ± 0.27a

0.64 ± 0.11b

1.03 ± 0.04b

1.03 ± 0.38b

0.62 ± 0.08b

18

Terpinolene

586-62-9

8.24 ± 0.25a

6.44 ± 0.18bc

7.14 ± 0.11b

5.34 ± 0.16c

5.4 ± 0.33c

19

d-Limonene

5989-27-5

5.56 ± 0.14a

2.71 ± 0.15c

4.58 ± 0.14b

2.21 ± 0.15d

1.79 ± 0.21d

20

ß-Ocimene

13877-91-3

4.92 ± 0.31a

3.08 ± 0.27b

4.66 ± 0.21a

2.69 ± 0.17c

1.78 ± 0.11d

21

Piperitone

89-81-6

12.17 ± 0.11a

10.09 ± 0.79b

10.16 ± 0.25b

11.2 ± 0.35ab

10.41 ± 0.67ab

22

Sabinene

3387-41-5

0.31 ± 0.06b

3.52 ± 0.26a

3.00 ± 0.31a

3.66 ± 0.41a

3.42 ± 0.27a

23

Globulol

489-41-8

ND

ND

ND

0.16 ± 0.02

ND

24

Nerolidol

142-50-7

ND

0.14 ± 0.01b

0.18 ± 0.02b

0.2 ± 0.01b

0.26 ± 0.03a

25

(-)-allo-Aromade0rene

25246-27-9

ND

ND

ND

0.19 ± 0.01

ND

26

(+)-Ledene

21747-46-6

ND

1.05 ± 0.21b

3.11 ± 0.18a

3.26 ± 0.05a

ND

27

Bicyclo[7.2.0]u0ec-4-ene, 4,11,11-trimethyl-8-methylene-,[1R-(1R*,4Z,9S*)]-

118-65-0

ND

0.41 ± 0.04a

0.15 ± 0.04b

0.17 ± 0.02b

ND

28

(1R,2S,6S,7S,8S)-8-Isopropyl-1-methyl-3-methylenetricyclo[4.4.0.02,7]decane-rel-

18252-44-3

ND

ND

0.53 ± 0.06a

ND

0.2 ± 0.02b

29

α-Himachalene

3853-83-6

ND

0.23 ± 0.04

ND

ND

ND

30

α-Elemene

63929-10-2

ND

2.06 ± 0.35

ND

ND

ND

31

3,8,8-Trimethyl-6-methyleneoctahydro-1H-3a,7-methanoazulene

79120-98-2

ND

0.94 ± 0.09a

0.56 ± 0.02b

ND

ND

32

(-)-Germacrene-D

317819-80-0

ND

1.41 ± 0.28a

0.51 ± 0.05b

ND

0.2 ± 0.01bc

33

(-)-Terpinen-4-ol

20126-76-5

ND

6.97 ± 1.08c

4.72 ± 1.52d

9.05 ± 1.1a

8.03 ± 1.32b

34

1H-Cycloprop[e]azulene, decahydro-1,1,7-trimethyl-4-methylene-

72747-25-2

ND

0.63 ± 0.06a

0.48 ± 0.02a

ND

0.3 ± 0.08b

35

diosphenol

490-03-9

ND

0.24 ± 0.01a

0.25 ± 0.01a

0.17 ± 0.02b

0.28 ± 0.02a

36

Naphthalene, 1,2,3,5,6,7,8,8a-octahydro-1,8a-dimethyl-7-(1-methylethenyl)-, [1S-(1a,7a,8aa)]-

10219-75-7

ND

0.27 ± 0.1a

0.15 ± 0.01ab

ND

ND

37

α-Thujone

62181-90-2

ND

1.52 ± 0.31a

ND

1.43 ± 0.03a

ND

38

(5R)-5-Isopropenyl-2-methyl-2-cyclohexen-1-ol

99-48-9

ND

ND

ND

0.53 ± 0.05

ND

39

α-Longipinene

5989-8-2

ND

0.72 ± 0.25a

0.44 ± 0.13ab

ND

ND

40

1,5,5-Trimethyl-6-methylidenecyclohexene

514-95-4

ND

ND

0.14 ± 0.01

ND

ND

41

(+)-alpha-Terpineol

7785-53-7

ND

1.01 ± 0.03a

ND

0.92 ± 0.24a

ND

42

8alpha-Hydroxy-alpha-gurjunene

70206-70-1

ND

ND

ND

ND

0.77 ± 0.01

Total

63.5

68.08

64.86

62.72

56.69