Table 4.
Volatile constituents identified in chang’aa samples.
| Sample | Sample Composition | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ACA | ACO | ACT | 2,3-Bu | ACON | ECPL | ECPN | FA | Suc | EL | EPT | |
| RT (min) | 5.3 | 5.8 | 6.2 | 7.0 | 11.7 | 13.7 | 16.9 | 17.2 | 17.4 | 20.3 | 28.8 |
| K01 | - | - | - | - | - | - | - | - | - | - | - |
| K02 | + | - | - | - | - | - | - | - | - | - | - |
| K03 | - | - | - | - | - | - | - | - | - | - | - |
| K04 | - | - | - | - | - | + | + | - | + | - | - |
| K05 | - | - | - | - | - | - | + | - | - | - | - |
| K06 | - | - | - | - | - | - | + | - | - | - | - |
| K07 | + | - | - | - | + | - | + | + | - | + | + |
| K08 | + | - | - | - | - | - | - | - | + | - | - |
| K09 | - | - | - | - | - | - | - | + | - | - | - |
| K10 | - | - | - | - | - | - | + | + | - | - | - |
| K11 | + | - | - | - | - | - | + | - | - | + | - |
| K12 | + | - | - | - | + | - | - | - | - | - | - |
| K13 | + | - | - | - | - | - | - | - | - | - | - |
| K14 | - | - | - | - | - | - | + | + | + | + | - |
| K15 | - | - | - | - | - | - | + | - | + | - | - |
| K16 | - | - | - | - | - | - | + | - | + | - | - |
| K17 | + | - | - | - | - | - | + | - | - | + | - |
| K18 | + | - | - | - | - | - | + | - | + | + | - |
| K19 | + | - | - | - | - | - | - | + | - | - | - |
| K20 | - | - | - | - | - | - | + | + | - | + | - |
| K21 | + | + | + | + | - | - | + | + | - | + | + |
| K22 | + | + | + | + | + | + | + | - | - | + | + |
| K23 | + | + | + | + | + | - | + | + | - | - | - |
| K24 | + | + | + | + | + | - | + | + | - | - | - |
| K25 | + | + | + | + | + | - | + | + | - | + | - |
| K26 | + | - | - | + | - | - | + | - | - | - | - |
| K27 | + | - | - | + | - | - | + | - | - | - | - |
| K28 | + | - | - | + | - | + | - | + | - | - | - |
ACA—Acetaldehyde, ACO—Acetone, ACT—Acetal, 2,3-but—2,3-butadione, ACON—Acetoin, FA—2-Furfural, ECPL—Ethyl caprylate, ECPO—Ethyl caproate, ECPN—Ethyl caprinate, EL—Ethyl laurate, EPT—Ethyl palmitate, EPD—Ethyl pentadecanoate, Hep—Heptanoic acid, Succ—Succinic acid and PhEt—Phenethyl alcohol, +—Detected, -—Not detected, Hep. was only detected in K28 while EPD was in K03 and K04, ECPO in K21.