Table 6.
Volatile components and content of six wines.
| No. | Volatile Aroma Component |
Relative to Internal Standard Content (mg/L) | KI a | Identification Method b | |||||
|---|---|---|---|---|---|---|---|---|---|
| S1 | S2 | S3 | S4 | Anqi | Diboshi | ||||
| Esters | |||||||||
| 1 | Ethyl acetate | 1.493 | 2.340 | 5.633 | 0.877 | 6.317 | 2.621 | 601 | MS,RI |
| 2 | Ethyl butyrate | 0.691 | 1.396 | 0.491 | 0.201 | 0.389 | 0.287 | 793 | MS,RI |
| 3 | Ethyl caproate | 0.495 | 0.341 | 0.088 | 0.156 | 1.037 | 1.259 | 990 | MS,RI |
| 4 | Ethyl heptanate | 0.537 | 0.762 | 0.088 | -c | 0.030 | 0.025 | 1080 | MS,RI |
| 5 | Ethyl octanoate | 3.771 | 2.239 | 0.205 | 0.243 | 2.602 | 4.949 | 1184 | MS,RI |
| 6 | Ethyl decanoate | 3.593 | 2.825 | - | 0.010 | 0.314 | 0.910 | 1380 | MS,RI |
| 7 | Isobutyl acetate | 0.106 | 0.191 | 0.581 | - | 0.224 | - | 764 | MS,RI |
| 8 | Isoamyl acetate | 5.756 | 4.212 | 3.737 | 0.766 | 3.886 | 3.404 | 866 | MS,RI |
| 9 | Ethyl Dodecanoate | 2.151 | 0.879 | - | - | - | 0.548 | 1578 | MS,RI |
| 10 | Tetradecanoic acid ethyl ester | 0.096 | 0.251 | 0.078 | - | - | - | 1778 | MS,RI |
| 11 | Methyl hexadecanoate | - | 0.598 | - | - | - | - | 1909 | MS,RI |
| 12 | Ethyl palmitate | 0.232 | 0.784 | 0.275 | - | - | 0.099 | 1978 | MS,RI |
| 13 | Acetic acid-2-methyl Butyl ester |
- | - | 0.092 | 0.240 | - | - | 869 | MS,RI |
| 14 | Phenylethyl acetate | - | 0.190 | - | 0.096 | 0.185 | - | 1224 | MS,RI |
| 15 | 9-decanoic acid ethyl ester | - | - | - | - | - | 0.808 | 1978 | MS,RI |
| alcohols | |||||||||
| 16 | ethanol | 26.826 | 52.744 | 62.579 | 23.329 | 40.510 | 51.980 | 440 | MS,RI |
| 17 | Propanol | 1.410 | - | 4.138 | - | 2.179 | 1.036 | 574 | MS,RI |
| 18 | Propylene glycol | - | - | - | - | - | 0.105 | 1605 | MS,RI |
| 19 | Glycerol | - | 0.155 | - | - | - | - | 2300 | MS,RI |
| 20 | N-butanol | 0.871 | 0.795 | 0.478 | - | 0.493 | 0.680 | 654 | MS,RI |
| 21 | Isobutanol | 1.989 | 2.727 | 1.119 | 0.599 | 0.178 | 0.875 | 607 | MS,RI |
| 22 | Isoamyl alcohol | 5.607 | 4.587 | 4.197 | 2.770 | 10.097 | 5.799 | 730 | MS,RI |
| 23 | N-hexanol | - | 0.073 | 0.054 | - | 0.012 | 0.059 | 832 | MS,RI |
| 24 | Phenylethanol | 2.250 | 1.686 | 0.617 | 0.700 | 0.439 | 0.539 | 1121 | MS,RI |
| 25 | 2-methyl butanol | 0.477 | 0.287 | - | 0.690 | - | - | 869 | MS,RI |
| 26 | 2-ethylhexanol | 0.125 | 0.989 | - | - | - | 0.875 | 1030 | MS,RI |
| 27 | 2,3-butanediol | 0.993 | 0.185 | 0.117 | 0.350 | 0.128 | 0.926 | 1556 | MS,RI |
| Acids | |||||||||
| 28 | acetic acid | 1.230 | 0.878 | 3.594 | 9.203 | 0.523 | 0.912 | 625 | MS,RI |
| 29 | Caproic acid | 0.230 | 0.037 | - | - | 0.082 | 0.054 | 975 | MS,RI |
| 30 | Octanoic acid | 0.954 | 0.715 | 0.156 | - | 0.067 | 0.220 | 1175 | MS,RI |
| 31 | Capric acid | 0.022 | 0.572 | - | - | - | 0.013 | 1203 | MS,RI |
| aldehyde | |||||||||
| 32 | acetaldehyde | 0.117 | 0.052 | - | - | - | 0.276 | 363 | MS,RI |
| 33 | Nonanal | 0.047 | 0.061 | 0.011 | - | - | - | 1101 | MS,RI |
| 34 | Decanal | 0.099 | - | - | - | - | - | 1206 | MS,RI |
| 35 | Acetal | - | 0.190 | - | - | - | 0.407 | 866 | MS,RI |
| Ketones | |||||||||
| 36 | 2-Octanone | 0.673 | 0.444 | 0.194 | 0.813 | 1.819 | 1.329 | 994 | MS,RI |
| 37 | Acetophenone | 0.038 | - | - | - | - | - | 1038 | MS,RI |
| 38 | Geranyl acetone | 0.010 | 0.049 | - | - | - | - | 1452 | MS,RI |
| terpenes | |||||||||
| 39 | 1-octadecane | 0.160 | - | - | - | - | - | 1790 | MS,RI |
| 40 | D-terpene diene | 0.156 | 0.012 | - | - | 0.054 | 0.018 | 1041 | MS,RI |
| 41 | Limonene e | - | 0.079 | - | - | - | - | 1029 | MS,RI |
| 42 | β-Cedrene | - | 0.014 | - | - | - | - | 1419 | MS,RI |
| 43 | 1-undecylene | - | 0.036 | - | - | - | - | 1883 | MS,RI |
| Phenols | |||||||||
| 44 | 2,6-DI-TERT-BUTYL Hydroxy p-cresol |
0.6630 | 0.202 | - | - | 0.011 | - | 1505 | MS,RI |
| 45 | 4-vinyl-2- METHOXYPHENOL |
- | 0.054 | - | - | - | - | 1315 | MS,RI |
a KI: retention index of HP-innowax column. b Identification method: Ms means comparison between the Wiley database and NIST database; RI represents the comparison with the retention index in the literature. -c: not detected.