Table 4. Volatile Compounds in Ripe and Overripe Wax Apple Juices and Cidersa.
| wax
apple juice |
wax
apple cider |
|||
|---|---|---|---|---|
| volatile compound (relative concentration %) | ripe | overripe | ripe | overripe |
| butanala, 3-methyl- | 0.20 ± 0.01 | 0.35 ± 0.05 | - | 0.10 ± 0.01 |
| furan, 2-ethyl- | 0.06 ± 0.00 | 0.06 ± 0.00 | - | - |
| propane, 1-methoxy- | - | - | 0.24 ± 0.10 | 0.30 ± 0.10 |
| pentanal | 0.2 ± 0.05 | 0.8 ± 0.08 | - | 0.24 ± 0.01 |
| ethene, fluoro- | - | - | 5.98 ± 0.80 | 7.60 ± 0.50 |
| 2-propanol, 1-chloro- | - | - | 2.44 ± 0.10 | 4.20 ± 0.10 |
| (1R)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene | 1.42 ± 0.30 | - | - | - |
| bicyclo[3.1.0]hex-2-ene, 2-methyl-5-(1-methylethyl)- | 0.84 ± 0.10 | 1.93 ± 0.10 | - | - |
| butanoic acid, ethyl ester | - | - | 0.12 ± 0.00 | 2.78 ± 0.10 |
| 1-propanol | - | - | 0.43 ± 0.05 | 1.27 ± 0.20 |
| ethanol | - | - | 0.67 ± 0.10 | 1.87 ± 0.10 |
| hexanal | 38.36 ± 2.00 | 47.56 ± 1.50 | - | - |
| methanamine | - | - | 3.89 ± 0.10 | 4.97 ± 0.30 |
| isocyanic acid | - | - | 0.54 ± 0.01 | 0.77 ± 0.01 |
| 1-butanol, 3-methyl-, acetate | 0.63 ± 0.01 | 0.96 ± 0.01 | 9.27 ± 0.01 | 12.94 ± 0.01 |
| 7-hydroxyheptene-1 | 2.00 ± 0.10 | 3.61 ± 0.20 | - | - |
| 2-hexanal, (E)- | 0.98 ± 0.01 | 1.02 ± 0.01 | - | - |
| hexanoic acid, ethyl ester | - | - | 0.45 ± 0.10 | 0.89 ± 0.10 |
| 3-methyl butanol | 0.23 ± 0.01 | 0.58 ± 0.01 | - | - |
| o-cymene | 3.91 ± 0.30 | 7.41 ± 0.10 | - | - |
| 1-butanol, 3-methyl- | - | - | 21.07 ± 0.50 | 29.11 ± 0.80 |
| hexan-1-ol | 0.29 ± 0.01 | 0.37 ± 0.05 | - | - |
| acetic acid, 3-methylpentyl ester | - | - | 2.25 ± 0.04 | 3.54 ± 0.01 |
| 1-pentanol | - | - | 0.12 ± 0.01 | 0.61 ± 0.05 |
| 4-hexen-1-ol, acetate | - | - | 0.23 ± 0.01 | 2.19 ± 0.10 |
| 3-hexen-1-ol, acetate, (Z)- | 0.14 ± 0.10 | 0.28 ± 0.20 | 0.31 ± 0.10 | 1.79 ± 0.20 |
| 1-pentanol, 2-methyl-, acetate | - | - | 1.95 ± 0.01 | 2.24 ± 0.30 |
| cyclohexyl acetate | - | - | 0.11 ± 0.05 | 0.18 ± 0.10 |
| 2,2-dimethyl-3-isopropenylcyclobutane-1-ethyl acetate | - | - | 0.14 ± 0.10 | 0.14 ± 0.20 |
| formamide, N,N-bis(2-cyanoethyl)- | 12.3 ± 0.60 | 25.61 ± 0.40 | - | - |
| 3-hexen-1-ol, (E)- | 0.87 ± 0.10 | 1.97 ± 0.10 | 0.46 ± 0.01 | 1.05 ± 0.01 |
| 3-hexen-1-ol, (Z)- | 5.77 ± 0.50 | 10.13 ± 0.20 | - | - |
| 4-hexen-1-ol, (E)- | - | - | 3.77 ± 0.20 | 7.51 ± 0.60 |
| 2,4-hexadienal | 0.91 ± 0.10 | 1.31 ± 0.10 | - | - |
| 2-hexen-1-ol, (E)- | 0.29 ± 0.05 | 0.79 ± 0.06 | - | - |
| ethyl octonate | - | - | 3.09 ± 0.20 | 5.08 ± 0.50 |
| p-cymene | 1.21 ± 0.10 | 2.47 ± 0.10 | - | - |
| 1-hexanol, 2-ethyl- | 0.19 ± 0.01 | 2.59 ± 0.01 | 0.07 ± 0.01 | 0.21 ± 0.01 |
| benzaldehyde | 0.28 ± 0.30 | 0.35 ± 0.20 | - | - |
| 2,3-butanediol, [R-(R*,R*)]- | - | - | 1.13 ± 0.10 | 4.17 ± 0.50 |
| 1-octanol | - | - | 0.22 ± 0.01 | 0.26 ± 0.05 |
| propanoic acid, 2-methyl- | - | - | 0.16 ± 0.05 | 0.31 ± 0.01 |
| caryophyllene | 4.22 ± 0.60 | 5.56 ± 0.50 | - | - |
| 1-isopropyl-4-methyl-3-cyclohexen-1-ol | 0.47 ± 0.01 | 0.92 ± 0.10 | - | - |
| ethyl decanoate | - | - | 0.42 ± 0.01 | 0.77 ± 0.01 |
| α-humulene | 0.38 ± 0.05 | - | - | - |
| butanoic acid, 2-methyl- | - | - | 0.49 ± 0.01 | 0.92 ± 0.04 |
| 1-propanol, 3-(methylthio)- | - | - | 0.40 ± 0.01 | 1.10 ± 0.01 |
| 1,3-propanediol, diacetate | - | - | 0.15 ± 0.03 | 0.37 ± 0.01 |
| Δ-cadinene | 0.59 ± 0.10 | 1.17 ± 0.10 | - | - |
| Oxime-, methoxy-phenyl- | 0.83 ± 0.22 | 1.62 ± 0.30 | 1.45 ± 0.06 | 3.34 ± 0.50 |
| acetic acid | 0.2 ± 0.01 | 0.5 ± 0.10 | 0.78 ± 0.20 | 1.57 ± 0.10 |
| β-pheylethyl butyrate | - | - | 0.28 ± 0.30 | 0.44 ± 0.40 |
| propanoic acid, 2-methyl-, 2,2-dimethyl-1-(2-hydroxy-1-methylethyl)propyl ester | 0.24 ± 0.01 | 0.58 ± 0.10 | - | - |
| benzenamine, 3-methoxy- | - | - | 5.98 ± 0.70 | 6.71 ± 0.90 |
| octanoic acid | 0.75 ± 0.10 | - | 0.14 ± 0.10 | 0.24 ± 0.20 |
| decanoic acid | - | - | 0.72 ± 0.10 | 1.79 ± 0.10 |
a
(-) indicates no detection of an amino acid. Data presented are mean and SEM from six replications.