Table 1.
Product concentrations and yields from the anaerobic maize silage fermentation without TE addition, with DGμ, with Fe(OH)3, and with Mn(OH)2
| Experiment | Product concentration | Product yield | Lactic acid yield | n‐Butyric acid yield | n‐Caproic acid yield |
|---|---|---|---|---|---|
| (gproduct/L) | (gproduct/kgVS) | (glactic acid/kgVS) | (gn ‐butyric acid/kgVS) | (gn ‐caproic acid/kgVS) | |
| w/o TE | 23.9 (±1.1) | 207 (±5) | 84 (±5)a | 13 (±4) | 0.1 (±0.0) |
| w/DGμ | 29.4 (±1.6) | 293 (±15) | 110 (±12) | 131 (±0) | 1.6 (±1.1) |
| w/Fe(OH)3 | 16.3 (±0.3) | 146 (±6) | 7 (±7) | 96 (±3) | 8.1 (±2) |
| w/Mn(OH)2 | 17.8 (±1.6) | 156 (±15) | 0.08 (±0.08) | 70 (±43) | 5.3 (±1.3) |
a
based on lactic acid concentrations on day 10.
The sum of all measured organic acids and alcohols was termed as product. Averages were calculated from values of all experiments (including the replicate experiments). The differences of average values from minimum and maximum are indicated in parentheses. Yields were related to the added substrate VS amount.