Table 1 The volatile aroma compounds identified and quantified in the lily rice wine that obtained from traditional- and present experimental technology (under the optimum conditions)
Number | Aroma compounds | Retention time (min) | Identification | Contents of volatile aroma compounds in 3 samples (mg/L) | ||
|---|---|---|---|---|---|---|
Raw material | Traditional technology | Present experimental technology | ||||
Esters | ||||||
ES1 | Isopentyl acetate | 3.785 | MS, RI | ND | ND | 0.940 |
ES2 | Isoamyl butyrate | 6.775 | MS, RI | ND | 0.520 | 0.611 |
ES3 | Ethyl oenanthate | 8.163 | MS, RI | ND | ND | 0.675 |
ES4 | Ethyl caprylate | 10.781 | MS, RI | ND | 1.074 | 2.481 |
ES5 | Hexyl formate | 11.33 | MS, RI | ND | 0.581 | 0.673 |
ES6 | Ethyl pelargonate | 13.115 | MS, RI | ND | ND | 0.690 |
ES7 | Ethyl caprate | 15.468 | MS, RI | ND | 1.211 | 4.380 |
ES8 | Isoamyl caprylate | 15.878 | MS, RI | ND | ND | 0.572 |
ES9 | Phenethyl acetate | 19.399 | MS, RI | ND | 2.145 | 8.479 |
ES10 | Ethyl laurate | 19.91 | MS, RI | ND | 2.874 | 6.789 |
ES11 | Isopentyl pentadecanoate | 20.257 | MS, RI | ND | ND | 0.587 |
ES12 | Ethyl acetate | 22.87 | MS, RI | ND | ND | 8.320 |
ES13 | Ethyl myristate | 24.004 | MS, RI | ND | 6.450 | 7.015 |
ES14 | Methyl palmitate | 27.108 | MS, RI | ND | ND | 0.455 |
ES15 | Ethyl palmitate | 27.907 | MS, RI | ND | 11.625 | 41.835 |
ES16 | E-11-hexadecenoic acid, ethyl | 28.338 | MS, RI | ND | ND | 2.823 |
ES17 | Ethyl stearate | 31.284 | MS, RI | ND | ND | 2.937 |
ES18 | Ethyl oleate | 31.663 | MS, RI | ND | 0.652 | 1.758 |
ES19 | Ethyl linoleate | 32.218 | MS, RI | ND | 10.325 | 12.593 |
ES20 | Ethyl linolenate | 33.057 | MS, RI | ND | ND | 0.336 |
ES21 | Ethyl, 9-cis, 11-trans-octadecadienoate | 33.498 | MS, RI | ND | 0.123 | 0.329 |
Σ | 0 | 37.580 | 105.278 | |||
Acids | ||||||
AC1 | Acetic acid | 11.601 | MS, RI | ND | 0.65 | 2.649 |
AC2 | Butanoic acid | 15.588 | MS, RI | ND | 20.349 | 0.676 |
AC3 | 2-Methyl hexanoic acid | 16.604 | MS, RI | ND | ND | 0.712 |
AC4 | Pentadecanoic acid | 20.345 | MS, RI | ND | ND | 0.793 |
AC5 | Octanoic acid | 24.565 | MS, RI | ND | ND | 1.961 |
AC6 | Nonanoic acid | 26.534 | MS, RI | ND | ND | 0.435 |
AC7 | n-Decanoic acid | 28.552 | MS, RI | ND | 0.412 | 3.094 |
AC8 | Dodecanoic acid | 31.877 | MS, RI | ND | ND | 0.726 |
AC9 | Oleic acid | 34.243 | MS, RI | ND | ND | 1.634 |
AC10 | Linoleic acid | 36.066 | MS, RI | ND | 2.11 | 10.16 |
AC11 | Myristic acid | 34.413 | MS, RI | ND | 1.418 | 2.24 |
AC12 | Pentadecanoic acid | 35.694 | MS, RI | ND | 0.354 | 1.235 |
AC13 | Hexadecanoic acid | 37.246 | MS, RI | 6.77 | 0.213 | 0.242 |
AC14 | n-Hexadecanoic acid | 37.265 | MS, RI | ND | 22.345 | 31.820 |
Σ | 6.77 | 47.851 | 58.377 | |||
Alcohols | ||||||
AL1 | Isoamyl alcohol | 7.254 | MS, RI | ND | 0.714 | 5.331 |
AL2 | 2-Nonanol | 9.519 | MS, RI | ND | 1.27 | 2.186 |
AL3 | 2,3-Butanediol | 13.506 | MS, RI | ND | 0.390 | 2.373 |
AL4 | 1-Octanol | 13.746 | MS, RI | ND | ND | 0.664 |
AL5 | 2-(2-Ethoxyethoxy)-ethanol | 15.184 | MS, RI | ND | ND | 0.482 |
AL6 | 2-Tetradecanol | 17.411 | MS, RI | ND | ND | 5.858 |
AL7 | Phenylethyl alcohol | 21.525 | MS, RI | ND | 2.369 | 39.518 |
AL8 | 2-Dodecanol | 21.613 | MS, RI | ND | ND | 0.561 |
AL9 | Isoborneol | 27.291 | MS, RI | ND | ND | 0.625 |
AL10 | Glycerin | 29.429 | MS, RI | ND | ND | 0.668 |
Σ | 0 | 4.743 | 58.266 | |||
Aldehydes | ||||||
AD1 | Decanal | 12.131 | MS, RI | ND | 0.214 | 0.683 |
AD2 | 4-Methylbenzaldehyde | 23.632 | MS, RI | ND | ND | 5.324 |
Σ | 0 | 0.214 | 6.007 | |||
Ketones | ||||||
KE1 | 2-Octanone | 7.103 | MS, RI | ND | 0.221 | 2.529 |
KE2 | 2-Undecanone | 14.472 | MS, RI | ND | ND | 0.391 |
KE3 | 2-Tridecanone | 19.159 | MS, RI | ND | ND | 0.473 |
KE4 | 2-Nonanone | 23.695 | MS, RI | ND | 2.350 | 0.67 |
KE5 | 5-Heptyldihydro-2(3H)-furanone | 30.01 | MS, RI | ND | ND | 4.034 |
Σ | 0 | 2.571 | 8.097 | |||
Alkenes | ||||||
AK1 | 1,3,5-(3E,5Z)-1,3,5-Undecatriene | 9.778 | MS, RI | ND | ND | 0.623 |
AK2 | 2-Tetradecene | 30.167 | MS, RI | ND | 1.462 | 0.651 |
AK3 | 1,15-Hexadecadiene | 30.634 | MS, RI | ND | ND | 3.702 |
Σ | 0 | 1.462 | 4.976 | |||
Volatile phenols | ||||||
VP1 | 4-Vinylguaiacol | 26.698 | MS, RI | ND | 8.32 | 12.24 |
Σ | 0 | 8.32 | 12.24 | |||
Thiazoles | ||||||
TH1 | 2-Mercapto-4-phenylthiazole | 12.11 | MS, RI | ND | ND | 1.23 |
Σ | 0 | 0 | 1.23 | |||