Table 6. Amount (μg/g) of volatile flavor compounds in coarsely-and finely-marbled 1+ grade Hanwoo loins.
| Volatile compounds (μg/g) | RT (min) | Marbling type | Identification method1) | |
|---|---|---|---|---|
| Coarseness | Fineness | |||
| Aldehydes | ||||
| Propanal | 1.701 | 0.01±0.00 | 0.01±0.00 | MS+STD |
| Butanal | 2.139 | 0.01±0.01 | 0.01±0.00 | MS+STD |
| 3-Methyl butanal | 2.699 | 0.01±0.00 | 0.01±0.01 | MS+STD |
| 2-Methyl butanal | 2.812 | 0.01±0.00 | 0.02±0.01 | MS+STD |
| Pentanal | 3.286 | 0.11±0.05 | 0.10±0.02 | MS+STD |
| Hexanal | 6.101 | 1.32±0.24a | 0.77±0.01b | MS+STD |
| E,2-Hexenal | 7.808 | ND | 0.01±0.00 | MS |
| Heptanal | 9.262 | 0.62±0.29 | 0.55±0.23 | MS+STD |
| E,2-Heptenal | 10.754 | 0.03±0.02 | 0.02±0.01 | MS |
| Benzaldehyde | 10.866 | 0.05±0.02 | 0.05±0.01 | MS+STD |
| Octanal | 11.921 | 0.47±0.02 | 0.53±0.03 | MS+STD |
| Benzenacetaldehyde | 12.873 | 0.01±0.00 | 0.01±0.01 | MS |
| E,2-Octenal | 13.185 | 0.05±0.05 | 0.03±0.01 | MS+STD |
| Nonanal | 14.198 | 0.76±0.04 | 0.73±0.31 | MS+STD |
| E,2-Nonenal | 15.334 | 0.14±0.07 | 0.19±0.06 | MS+STD |
| E,4-Decenal | 15.938 | 0.03±0.01 | 0.04±0.00 | MS |
| Decanal | 16.227 | 0.07±0.03 | 0.05±0.02 | MS+STD |
| E,2-Decenal | 17.267 | 0.21±0.12 | 0.14±0.07 | MS+STD |
| Undecanal | 18.088 | 0.03±0.01 | 0.03±0.00 | MS |
| E,E,2,4-Decadienal | 18.296 | 0.01±0.01 | 0.01±0.00 | MS+STD |
| 2-Undecenal | 19.076 | 0.09±0.05 | 0.07±0.04 | MS |
| Tridecanal | 19.823 | 0.01±0.01 | 0.01±0.00 | MS |
| 2-Methyl-undecenal | 20.651 | 0.01±0.00 | 0.01±0.00 | MS |
| Alcohols | ||||
| 1-Pentanol | 5.013 | 0.05±0.03 | 0.03±0.01 | MS+STD |
| 1-Hexenol | 8.344 | 0.03±0.02 | 0.04±0.02 | MS+STD |
| Ketones | ||||
| 3-Heptanone | 8.775 | 0.01±0.00 | 0.01±0.00 | MS |
| 2-Heptanone | 8.889 | 0.03±0.02 | ND | MS+STD |
| 2-Methyl-4-heptanone | 10.458 | 0.03±0.00 | 0.03±0.00 | MS |
| 4-Octanone | 11.134 | 0.05±0.05 | 0.04±0.02 | MS |
| 2,5-Octanedione | 11.474 | 0.09±0.09 | 0.05±0.03 | MS |
| 2-Nonanone | 13.887 | 0.04±0.02 | 0.03±0.00 | MS |
| Hydrocarbons | ||||
| Toluene | 4.942 | 0.01±0.00 | 0.01±0.00 | MS+STD |
| 2-Octene | 5.751 | 0.01±0.00 | 0.01±0.00 | MS |
| 1,3-Dimethylbenzene | 8.253 | 0.01±0.00 | 0.01±0.01 | MS |
| 1-Nonene | 8.934 | ND | 0.03±0.02 | MS |
| Nonane | 9.193 | 0.01±0.00 | 0.01±0.00 | MS |
| 2-Methyl hexane | 11.091 | 0.005±0.00 | 0.01±0.00 | MS |
| Hexanoic acid | 11.34 | 0.02±0.01 | 0.03±0.02 | MS |
| Decane | 11.832 | 0.02±0.01 | 0.03±0.02 | MS |
| 2-Methyl decane | 12.346 | ND | 0.01±0.00 | MS |
| 3-Ethyl-2-methyl-1,3-hexadiene | 12.565 | 0.007±0.01b | 0.01±0.00a | MS+STD |
| 2,2-Dimethyl octane | 13.289 | ND | 0.01±0.00 | MS |
| Undecane | 14.088 | 0.01±0.01 | 0.02±0.01 | MS |
| Z-3-Dodecene | 14.758 | 0.01±0.01 | 0.02±0.00 | MS |
| Benzoic acid | 15.48 | 0.23±0.13 | 0.09±0.03 | MS |
| Furans | ||||
| 2-Pentyl furan | 11.586 | 0.10±0.08 | 0.06±0.03 | MS+STD |
| 2-Heptyl furan | 16.097 | 0.02±0.01 | 0.02±0.00 | MS+STD |
| 2-n-Octyl furan | 17.887 | 0.02±0.01 | 0.01±0.01 | MS+STD |
| Sulfur and nitrogen compounds | ||||
| Carbon disulfide | 1.867 | 0.003±0.00 | 0.004±0.00 | MS |
| 2,5-Dimethyl pyrazine | 9.534 | 0.02±0.01 | 0.03±0.02 | MS+STD |
| 2-Ethyl-3,5-dimethyl pyrazine | 13.568 | 0.01±0.00 | 0.02±0.00 | MS+STD |
| 5-Butylhydro-2(3H)-furazone | 17.161 | 0.01±0.01 | ND | MS |
1)
The flavor compounds were identified by mass spectra (MS) from library or external standard (STD).
a,b
Means within a same row with different superscripts differ significantly p<0.05.
ND, not detectable.