TABLE 4.
Influence of branched-chain C6 carboxylic acid precursors on L. monocytogenes fatty acid composition
| Fatty acid (retention time [min]) | % of fatty acid composition in: |
|||||
|---|---|---|---|---|---|---|
| BHI |
BHI + 2-ethylbutyrate |
BHI + 2-methylpentanoate |
||||
| 37°C | 10°C | 37°C | 10°C | 37°C | 10°C | |
| Anteiso-C15:0 (2.42) | 45.0 | 71.0 | 25.0 | 55.8 | 25.4 | 49.2 |
| Anteiso-C17:0 (3.05) | 39.0 | 6.0 | 33.8 | 9.2 | 32.8 | 5.3 |
| Iso-C15:0 (2.34) | 7.0 | 12.0 | 7.2 | 13.1 | 7.9 | 20.9 |
| Iso-C17:0 (3.02) | 3.1 | 0.4 | 5.3 | 0.4 | 5.8 | 0.5 |
| Iso-C14:0 (2.09) | 1.0 | 3.0 | 0.4 | 1.0 | 0.4 | 2.6 |
| Iso-C16:0 (2.71) | 2.8 | 1.4 | 2.8 | 1.1 | 3.5 | 0.9 |
| 12-Ethyltetradecanoic acida (2.72) | NDb | ND | 18.9 | 14.8 | ND | ND |
| 14-Ethylhexadecanoic acida (3.36) | ND | ND | 4.3 | 0.4 | ND | ND |
| 10-Methyltridecanoic acida (2.07) | ND | ND | ND | ND | 0.25 | 7.3 |
| 12-Methylpentadecanoic acida (2.69) | ND | ND | ND | ND | 20.4 | 9.2 |
| 14-Methylheptadecanoic acida (3.32) | ND | ND | ND | ND | 2.2 | ND |
a
Tentative identification.
b
ND, not detected.