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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)

From: Improvement of the aroma of lily rice wine by using aroma-producing yeast strain Wickerhamomyces anomalus HN006

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
  1. MS compounds were identified by MS spectra, RI compounds were identified by comparison with RI from literature, ND not detected