TABLE 1.
Major non-volatile compounds released by Azotobacter chroococcum, Bacillus megaterium, and Pseudomonas fluorescens in pure cultures, and during co-cultivation with Listeria monocytogenes.
| Culture | TLC spot no. | Compound | Retention time | m/z | Chemical formula |
| A. chroococcum | 1 | 2,4,12-Octadecatrienoic acid isobutylamide | 13.94 | 333.30 | C22H39NO |
| 2 | 1-Chloroethane-1-sulfonyl chloride | 0.88 | 161.93 | C2H4Cl2O2S | |
| A. chroococcum + L. monocytogenes | 3 | Agelasine | 16.07 | 422.33 | C26H39N5 |
| CAY10571 | 8.14 | 394.11 | C21H16FN3O2S | ||
| 2-(Ethylamino)-4,5-dihydroxybenzamide | 1.67 | 196.08 | C9H12N2O3 | ||
| N-[1-(2-fluorophenyl)ethylideneamino]benzo[1,3]dioxole-5-carboxamide | 11.85 | 300.09 | C16H13FN2O3 | ||
| 5-(4,4,5,5-tetramethyl-1, 3, 2-dioxaborolan-2-yl)- 3,6-dihydro-2H-pyran | 3.86 | 211.11 | C11H19BO3 | ||
| 4 | Piperonyl sulfoxide | 8.14 | 325.18 | C18H28O3S | |
| 7-Deoxyloganate | 11.89 | 361.15 | C16H24O9 | ||
| B. megaterium | 5 | 2,4,12-Octadecatrienoic acid isobutylamide | 13.95 | 356.29 | C22H39NO |
| 6 | 1-Chloroethane-1-sulfonyl chloride | 0.88 | 161.93 | C2H4Cl2O2S | |
| B. megaterium + L. monocytogenes | 7 | N-[1-(2-fluorophenyl)ethylideneamino]benzo[1,3]dioxole-5-carboxamide | 11.85 | 300.09 | C16H13FN2O3 |
| Carbamothioic acid, dimethyl-, S-methyl ester | 0.68 | 119.04 | C4H9NOS | ||
| 8 | Amsacrine | 8.13 | 393.11 | C21H19N3O3S | |
| P. fluorescens | 9 | Butanoic acid, 4-(hexadecylamino)-4- oxo-, methyl ester | 13.93 | 355.31 | C21H41NO3 |
| 10 | 1-Chloroethane-1-sulfonyl chloride | 0.88 | 161.93 | C2H4Cl2O2S | |
| P. fluorescens + L. monocytogenes | 11 | 2-(Ethylamino)-4,5-dihydroxybenzamide | 1.67 | 196.08 | C9H12N2O3 |
| 3-Azido-2H-1-benzopyran-2-one | 1.06 | 188.04 | C9H5N3O2 | ||
| Carbamothioic acid, dimethyl-, S-methyl ester | 0.68 | 119.04 | C4H9NOS | ||
| 12 | 7-Deoxyloganate | 11.89 | 361.15 | C16H24O9 |
Compounds in chloroform extracts were identified from UPLC-MS with their retention time, m/z, chemical formula and structure.