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. 2023 May 1;43(3):471–490. doi: 10.5851/kosfa.2023.e10

Table 2. Analysis of volatile flavor substances from liquid smoke and egg yolk of salted duck egg supplemented with LS by GC-MS.

LS Salted duck egg yolk supplemented with 2.5% (v/v) LS
Retention/min Compound name Retention/min Compound name
Esters Esters
 1 12.192 Methyl caproate  1 16.512 Glycine, N-(2-furylcarbonyl)-methyl ester
 2 14.811 Methyl 2-furoate  2 20.937 Methyl benzoate
 3 21.286 Methyl benzoate
 4 22.704 Methyl octanoate
 5 26.845 4-Methyl-benzoic acid methyl ester
 6 32.130 2-Sec-butylphenylmethylcarbamate
 7 32.584 3-Methoxy-benzoic acid methyl ester
 8 35.098 2’-Hydroxy-5’-methoxyacetophenone, acetate
Acids Acids
 1 2.674 Acetic acid  1 2.291 Acetic acid
 2 6.688 Butyric acid
 3 6.884 (E)-2-Butenoic acid
Alcohols Alcohols
 1 29.098 O-Methoxy-α-methylbenzyl alcohol  1 8.597 3-Furanmethanol
 2 35.098 6-Methyl-5-(1-methylethyl)-5-hepten-3-yn-2-ol  2 8.597 2-Furanmethanol
 3 39.710 Dihydroartemisinin
 4 40.082 5-Tert-butylpyrrolidinol
Ketones Ketones
 1 10.968 2-Methyl-2-cyclopent-1-one  1 10.972 2-Methyl-2-cyclopent-1-one
 2 10.968 3-Methyl-2-cyclopent-1-one  2 10.972 3-Methyl-2-cyclopent-1-one
 3 11.225 1-(2-Furyl)-ethanone  3 11.280 1-(2-Furyl)-ethanone
 4 13.213 2,3-Dimethyl-2-cyclopent-1-one  4 11.362 1-(1H-pyrazol-4-yl)-ethanone
 5 15.941 3,4-Dimethyl-2-cyclopent-1-one  5 12.688 3,4-Dimethyl-2-cyclopent-1-one
 6 16.585 1-(2-Furyl)-1-propanone  6 15.920 2,3-Dimethyl-2-cyclopent-1-ene
 7 18.351 2,3,5-Trimethyl-2-cyclopent-1-one  7 17.133 4,4-Dimethyl-2-cyclopenten-1-one
 8 18.351 3,4,4-Trimethyl-2-cyclopent-1-one  8 17.366 2,3,4-Trimethyl-2-cyclopent-1-one
 9 19.565 Acetophenone  9 19.385 Acetophenone
 10 21.408 1-(2-Furyl)-ethanone  10 19.951 3-Ethyl-2-cyclopent-1-one
 11 23.084 1-(2-Methylphenyl)-ethanone  11 23.578 2,3,4,5-Tetramethyl-2-cyclopent-1-one
 12 23.172 2,3,4-Trimethyl-2-cyclopent-1-one  12 33.778 2’,4’-Dihydroxypropiophenone
 13 24.144 2,3-Dimethylhydroquinone  13 33.778 2,5-Dihydroxypropiophenone
 14 24.293 4’-Hydroxy-acetophenone
 15 24.293 1-(2-Hydroxyphenyl)-ethanone
 16 26.598 Spiro[4.5]decan-2-one
 17 27.139 4-Hydroxy-2,4,5-trimethyl-2,5-cyclohexadien-1-one
 18 28.460 4-Hydroxy-3-methylacetophenone
 19 30.818 1-(2,5-Dihydroxyphenyl)-ethanone
 20 31.014 1-Methylinden-2-one
 21 31.014 2,3-Dihydro-2-methyl-1H-inden-1-one
 22 32.008 2’,6’-Dihydroxy-3’-methylacetophenone
 23 32.008 1-(2-Hydroxy-4-methoxyphenyl)-ethanone
 24 32.200 1-(2-Hydroxy-6-methoxyphenyl)-ethanone
 25 33.552 1-(4-Hydroxy-3-methoxyphenyl)ethanone
 26 33.552 Tert-butyl hydroquinone
 27 34.470 2,3-Dihydro-3,3-dimethyl-1H-inden-1-one
 28 34.470 1-(2,3-Dihydro-1H-inden-5-yl)-ethanone
 29 34.649 7-Methylinden-1-one
 30 36.606 1-(3,4-Dimethoxyphenyl)-ethanone
 31 37.243 4-(4-Methoxyphenyl)3-buten-2-one
 32 38.685 6,7-Dimethoxy-1(3H)-benzofuranone
Aldehydes Aldehydes
 1 7.630 Furfural  1 7.405 Furfural
 2 7.630 3-Furfural  2 7.438 3-Furfural
 3 13.794 Benzaldehyde  3 13.765 Benzaldehyde
 4 14.080 5-Methyl-2-furfuraldehyde  4 14.063 5-Methyl-2-furfuraldehyde
 5 18.138 2-Hydroxy-benzaldehyde
 6 18.138 3-Hydroxy-benzaldehyde
 7 22.801 2-Hydroxy-4-methylbenzaldehyde
 8 22.801 2-Hydroxy-3-methylbenzaldehyde
 9 22.801 2-Hydroxy-6-methyl-benzaldehyde
 10 35.667 2-Ethoxy-4-anisaldehyde
 11 36.889 3-Ethoxy-4-methoxybenzaldehyde
Nitrogenous Nitrogenous
 1 22.050 4-Methoxy-1,3-phenylenediamine nd nd
 2 34.368 N-(Adamantan-1-yl)methyl-2,5-dichloro-benzenesulfonamide
 3 38.000 1-Methyl-N-vanillyl-(+)-s-2-phenethylamine
 4 41.291 1-Methyl-N-vanillyl-(+)-S-2-phenethylamine
 5 41.291 1-Methyl-N-(-)-R-phenethylamine
 6 41.291 1-Methyl-N-vanillyl-(+-)-2-phenylethylamine
Ethers Ethers
 1 29.098 3,4-Methylenedioxyanisole nd nd
 2 31.489 O-Isopropyl anisole
 3 36.606 3-Tert-butyl-4-hydroxyanisole
Heterocyclic Heterocyclic
 1 8.920 2,4-Dimethylfuran  1 7.438 3,5-Dimethylpyrazole
 2 9.741 3,5-Dimethylpyrazole  2 15.689 2-Ethyl-5-methyl-furan
 3 20.044 2,3-Dihydro-benzofuran
 4 24.197 1,3,5-Trimethyl-1H-pyrazole
 5 36.167 1,3-Dihydro-5,6-dimethyl-2-benzothiophene
 6 37.243 2-Ethyl-7-methyl-benzo[b]thiophene
 7 38.000 2,5-Dibutyl-furan
Hydrocarbons Hydrocarbons
 1 9.439 1-Cyclohexyl-2,5-diene  1 12.688 1,3-Dimethyl-1-cyclohexene
 2 12.682 1-Methylcycloheptene  2 12.756 Tetramethylmethylenecyclopropane
 3 12.703 1,2-Dimethyl-cyclohexene  3 12.792 5,5-Dimethyl-1,3-hexadiene
 4 17.022 1-Methoxy-3-methyl-benzene  4 12.792 2,3-Dimethyl-2,4-hexadiene
 5 18.351 3-Fluoro-o-xylene  5 12.792 2,5-Dimethyl-2,4-hexadiene
 6 22.487 1,1,2-Trimethyl-3-(2-methyl-1-propenyl)-cyclopropane  6 13.113 1-Methylcycloheptene
 7 28.849 2-Methoxy-1,3,5-trimethylbenzene  7 13.195 1,6-Dimethyl-cyclohexene
 8 29.332 2,6-Dimethoxytoluene  8 17.133 3,4-Dimethyl-(Z,Z)-2,4-hexadiene
 9 29.332 3,5-Dimethoxytoluene  9 17.709 1-Methylcyclooctene
 10 30.541 1-Methoxy-4-(1-methylethyl)-benzene  10 21.336 1-Isopropylcyclohex-1-ene
 11 30.818 1,4-Dimethoxy-2-methyl-benzene  11 22.284 1,1,2-Trimethyl-3-(2-methyl-1-propenyl)-cyclopropane
 12 31.567 1,2,3-Trimethoxybenzene  12 22.808 2,6-Dimethyl-2,4-heptadiene
 13 32.008 4-Ethyl-1,2-dimethoxy-benzene  13 27.597 1,2,3,4,5-Pentamethyl-1,3-cyclopentadiene
 14 34.368 1-Ethyl-1(1-cyclobutylethylene)cyclobutane  14 28.125 2,3-Dimethoxytoluene
 15 34.368 1-Methoxy-4-(1-methylpropyl)-benzene  15 28.125 3,4-Dimethoxytoluene
 16 35.481 1,2,3-Trimethoxy-5-methylbenzene  16 31.525 1,2,3-Trimethoxybenzene
 17 35.667 1,2-Dimethoxy-4-n-propylbenzene
 18 39.710 9-Ethylfluorene
Phenolics Phenolics
 1 15.570 Phenol  1 15.325 Phenol
 2 19.409 p-Cresol  2 19.091 2-Methyl-phenol
 3 19.409 2-Methyl-phenol  3 20.198 p-Cresol
 4 20.703 3-Methyl-phenol  4 20.198 3-Methyl-phenol
 5 20.782 Methoxyphene  5 20.666 2-Methoxy-phenol
 6 20.782 2-Methoxy-phenol  6 20.666 Methoxyphene
 7 21.730 2,6-Dimethyl-phenol  7 21.536 2,6-Dimethyl-phenol
 8 22.050 Methoxycresol  8 22.284 2,6-Dimethyl-1,4-benzenediol
 9 23.439 2-Ethyl-phenol  9 23.319 2-Ethyl-phenol
 10 23.973 2,3-Dimethyl-phenol  10 23.755 2,3-Dimethyl-phenol
 11 23.973 3,5-Dimethyl-phenol  11 23.755 2,4-Dimethyl-phenol
 12 23.973 2,4-Dimethyl-phenol  12 23.755 3,5-Dimethyl-phenol
 13 24.931 3-Ethyl-phenol  13 25.104 2-Methoxy-6-methylphenol
 14 24.931 4-Ethyl-phenol  14 25.104 2-Methoxy-3-methyl-phenol
 15 25.248 2-Methoxy-6-methylphenol  15 25.104 4-Methoxy-3-methyl-phenol
 16 25.248 2-Methoxy-3-methyl-phenol  16 25.472 2-Methoxy-5-methylphenol
 17 25.248 4-Methoxy-3-methyl-phenol  17 25.472 Cresol
 18 26.456 2,4,5-Trimethyl-phenol  18 25.665 2,5-Dimethyl-1,4-benzenediol
 19 26.456 2,4,7-Trimethyl-phenol  19 26.297 2,4,6-Trimethyl-phenol
 20 27.021 m-Tert-butyl-phenol  20 27.597 2-Ethyl-4-methyl-phenol
 21 27.021 p-Tert-butyl-phenol  21 27.597 3-Ethyl-5-methyl-phenol
 22 27.392 2-Propyl-phenol  22 29.844 4-Ethyl-2-methoxy-phenol
 23 27.695 2-Ethyl-4-methyl-phenol  23 33.778 2-Methoxy-4-propyl-phenol
 24 27.695 2-Ethyl-6-methyl-phenol
 25 27.695 3-Ethyl-5-methyl-phenol
 26 28.200 2-(1-Methylethyl)-phenol
 27 28.200 3-(1-Methylethyl)-phenol
 28 28.460 3,4-Diethylphenol
 29 28.460 3-Methyl-5-(1-methylethyl)-methylcarbamatephenol
 30 29.503 2,3,5-Trimethyl-phenol
 31 29.747 2,4,6-Trimethyl-phenol
 32 30.090 4-Ethyl-2-methoxy-phenol
 33 30.541 3-Methyl-4-isopropylphenol
 34 30.541 Thymol
 35 30.750 2-Methyl-5-(1-methylethyl)phenol
 36 31.170 2,3,4,6-Tetramethyl-phenol
 37 31.170 2-Ethyl-4,5-dimethyl-phenol
 38 31.356 2,3,5-Trimethyl-1,4-benzenediol
 39 31.356 3-Isopropylthiophenol
 40 31.489 2-Methyl-5-(1-methylethyl)phenol
 41 32.130 2-(1-Methylpropyl)-phenol
 42 32.200 P-Tert-butylcatechol
 43 33.149 2,6-Dimethoxy-phenol
 44 33.392 3-Allyl-6-methoxyphenol
 45 33.392 Eugenol
 46 33.552 4-(1,1-Dimethylethyl)-thiophenol
 47 33.685 2,3,5,6-Tetramethyl-phenol
 48 33.883 2-Methoxy-4-propyl-phenol
 49 37.328 2-Ethyl-5-n-propylphenol
 50 39.635 2,5-Bis(1,1-dimethylethyl)phenol
 51 39.635 2,4-Bis(1,1-dimethylethyl)phenol
 52 39.710 4,6-Dimethoxy-phthalide
 53 43.170 2,6-Bis(1,1-dimethylethyl)-4-(1-oxopropyl)phenol
Others Others
 1 25.561 Dimethylphenylphosphine nd nd
 2 32.584 M-Phenylhydrazide

LS, liquid smoke; GC-MS, gas chromatography-mass spectrometry.