Table 2.
Concentration ranges of diacetyl in several types of liquor
| Samples | Number | Average (mg/L) | Minimum (mg/L) | Maximum (mg/L) |
|---|---|---|---|---|
| Whiskey | 12 | 0.093 ± 0.144 | Tracea | 0.413 |
| Distilled Soju | 9 | 0.070 ± 0.110 | NDb | 0.329 |
| General distilled spirits | 38 | 0.249 ± 0.672 | ND | 3.443 |
| Diluted Soju | 15 | 0.067 ± 0.155 | ND | 0.571 |
| Liqueur | 25 | 0.034 ± 0.048 | ND | 0.129 |
| Fruit wine | 31 | 0.432 ± 0.767 | Trace | 3.305 |
| Others | 33 | 0.042 ± 0.066 | ND | 0.320 |
| Cheongju | 15 | 0.076 ± 0.135 | Trace | 0.545 |
| Total | 178 | 0.163 ± 0.471 | ND | 3.443 |
All data are shown as mean ± standard deviation (number = n)
aTrace, LOD ≤ to ≤ LOQ
b ND not detected