Table 2 Effects of mixed ensilage on the VOCs of alcohols and acids in MCR.
No | Compounds | CAS | % | ||||
|---|---|---|---|---|---|---|---|
MCR | MCRCM | MCRBR | MCRCC | MCRST | |||
Acids | |||||||
1 | Acetic acid | 64-19-7 | 0.57 ± 0.01d | 3.38 ± 1.31c | 6.18 ± 2.53b | 5.78 ± 0.92b | 8.15 ± 1.01a |
2 | Lactic acid | 50-21-5 | ND | ND | ND | 2.34 ± 1 | ND |
3 | n-Heptanoic acid | 142-62-1 | ND | ND | ND | 0.28 ± 0 | ND |
4 | Octanoic acid | 124-07-2 | ND | 0.26 ± 0.01 | ND | ND | ND |
5 | (E)-3-hexenoic acid | 1577-18-0 | ND | ND | ND | 0.27 ± 0.01 | ND |
6 | Cyclohexanebutyric acid | 4441-63-8 | ND | ND | ND | 0.31 ± 0.05 | ND |
Alcohols | |||||||
7 | Phenylethyl alcohol | 60-12-8 | 0.49 ± 0.27c | 0.86 ± 0.14b | 1.45 ± 0.04a | 0.72 ± 0.11b | 1.58 ± 0.05a |
8 | 1-Propanol | 71-23-8 | ND | 0.71 ± 0.44a | 0 ± 0 | ND | ND |
9 | Ethanol | 64-17-5 | ND | 0.6 ± 0.47a | 0.27 ± 0.04a | ND | ND |
10 | (±)-2-Butanol | 78-92-2 | ND | ND | ND | ND | 2.89 ± 0.78a |
11 | (3-Methyl-oxiran-2-yl)-methanol | 872-38-8 | ND | ND | ND | ND | 3.35 ± 0.37 |
12 | Leaf alcohol | 928-96-1 | ND | ND | ND | 1.74 ± 0.18 | ND |
13 | Acetic acid,hex-4-en-1-ol | 72237-36-6 | ND | 0.35 ± 0.04 | ND | ND | ND |
14 | Benzyl alcohol | 100-51-6 | ND | 0.43 ± 0.11a | 0.29 ± 0.06ab | 0 ± 0 | 0.2 ± 0.01bc |
15 | (E)-3-phenylbut-2-enal | 1196-67-4 | ND | 0 ± 0 | 0.16 ± 0.02b | 0.28 ± 0.07a | ND |
16 | Hotrienol | 20053-88-7 | ND | ND | 0.26 ± 0.07 | ND | ND |
17 | Leaf alcohol | 928-96-1 | 1.42 ± 0.19 | ND | ND | ND | ND |
18 | trans-Chrysanthenol | 38043-83-3 | 0.15 ± 0.01 | ND | ND | ND | ND |
19 | 1-(2,6,6-Trimethyl-1,3-cyclohexadienyl)ethane | 102676-97-1 | ND | ND | ND | 0.33 ± 0.12 | ND |
20 | 1-Hexanol | 111-27-3 | 0.42 ± 0.07 | ND | ND | ND | ND |
