Table 1.
The fermentation products of CPB6 with different electron acceptors (EAs)
| Groups | Lactate consumption (g/L) | Fermentation products (g/L)a | ||||||
|---|---|---|---|---|---|---|---|---|
| Acetic acid | Propionic acid | Butyric acid | Pentanoic acid | Caproic acid | Heptanoic acid | Octanoic acid | ||
| Without EA | 5.49 | ND | ND | ND | ND | 1.96 ± 0.10 | ND | ND |
| With EA | ||||||||
| Ace | 11.66 | 5.49 ± 0.22b | ND | 1.12 ± 0.06 | ND | 4.62 ± 0.17 | ND | ND |
| Pro | 11.76 | 1.41 ± 0.03 | 3.22 ± 0.09b | 0.87 ± 0.03 | 4.38 ± 0.15 | 1.76 ± 0.16 | 0.68 ± 0.07 | ND |
| But | 11.86 | 1.72 ± 0.07 | ND | 4.05 ± 0.13b | ND | 8.07 ± 0.18 | ND | ND |
| Pen | 7.90 | ND | ND | ND | 6.49 ± 0.31b | 1.78 ± 0.21 | 2.09 ± 0.31 | ND |
| Cap | 5.31 | ND | ND | ND | ND | 9.00 ± 0.15b | ND | ND |
ND not detected
a The data represents the average of triplicate determinations after 3-day cultivation. The fermentation medium contains 12 g/L lactate with 100 mM different electron acceptors including acetate, propionate, butyrate and pentanoate except caproate (50 mM)
b The values are undefined as products or unspent substrates