Table 2. Volatile compounds (n = 16) identified by HS-SPME/GC–MS analysis of agar plate samples inoculated with P. aeruginosa during 48 h of incubation.
| No | rta | Volatile Compound | 0 h | 12 h | 24 h | 36 h | 48 h |
|---|---|---|---|---|---|---|---|
| 1 | 2.88 | Disulfide,dimethyl | n.d.b | n.d. | n.d. | 22.661 ± 5.328 | 22.836 ± 5.642 |
| 2 | 7.20 | Oxime-,methoxy-phenyl- | n.d. | n.d. | n.d. | 0.485 ± 0.429 | n.d. |
| 3 | 7.58 | Pyrazine,2,5-dimethyl- | n.d. | n.d. | n.d. | 0.555 ± 0.238 | 0.431 ± 0.380 |
| 4 | 9.63 | Benzaldehyde | 1.898 ± 0.303 | n.d. | n.d. | n.d. | n.d. |
| 5 | 11.61 | 1-Hexanol,2-ethyl- | n.d. | 5.736 ± 0.505 | n.d. | 8.256 ± 2.014 | 10.407 ± 1.969 |
| 6 | 13.74 | Cyclopropane,1-methyl-2-octyl | n.d. | n.d. | 3.055 ± 3.234 | 11.341 ± 6.127 | 11.059 ± 4.620 |
| 7 | 14.14 | Nonanal | 3.112 ± 0.409 | n.d. | n.d. | n.d. | n.d. |
| 8 | 14.40 | 1-Decene | n.d. | n.d. | n.d. | 1.095 ± 0.306 | n.d. |
| 9 | 16.19 | Hexadecanal | 0.447 ± 0.486 | n.d. | n.d. | n.d. | n.d. |
| 10 | 16.84 | Dodecane | n.d. | 0.133 ± 0.007 | n.d. | 0.546 ± 0.520 | 0.279 ± 0.070 |
| 11 | 16.86 | 2-Tetradecanone | 0.272 ± 0.038 | n.d. | n.d. | n.d. | n.d. |
| 12 | 17.26 | Decanal | 4.093 ± 1.052 | n.d. | n.d. | n.d. | n.d. |
| 13 | 20.14 | Dodecanal | 0.723 ± 0.566 | n.d. | n.d. | n.d. | n.d. |
| 14 | 20.28 | Oxirane, decy1- | n.d. | 0.92 ± 0.007 | n.d. | 0.313 ± 0.136 | 1.042 ± 1.050 |
| 15 | 24.43 | 5,9-Undecadien-2-one,6,10-dimethyl- (E)-, | 0.636 ± 0.398 | 0.279 ± 0.002 | n.d. | 0.241 ± 0.171 | 0.221 ± 0.004 |
| 16 | 25.89 | Cetene | n.d. | n.d. | n.d. | n.d. | 0.588 ± 0.617 |
aRt: retention time.
bN.d.: not detected.