TABLE 5.
Effect of nitrate on formation of acetate, and fate of nitrate reduction in C. thermoaceticum
| Culture | NO3− medium (mM) | Mean ± SD (n = 3)
|
|||||
|---|---|---|---|---|---|---|---|
| Glucose consumed (mM) | Acetate formed (mM) | Acetate formed/ glucose consumed | NO3− consumed (mM) | NO3− consumed/ glucose consumed | ΔNH4+ (mM)b | ||
| Stoppered | 0 | 55 ± 4 | 160 ± 20 | 2.9 ± 0.3 | NAa | NA | −8.3 ± 0.5 |
| 30 | 40 ± 6 | 84 ± 7 | 2.1 ± 0.2 | 26 ± 5 | 0.6 ± 0.1 | +5.3 ± 3 | |
| CO2 sparged | 0 | 47 ± 7 | 130 ± 12 | 2.9 ± 0.4 | NA | NA | −9.3 ± 0.9 |
| 30 | 23 ± 1 | 51 ± 9 | 2.2 ± 0.3 | 31 ± 6 | 1.3 ± 0.2 | +16 ± 1 | |
a
NA, not applicable.
b
−, net consumption of ammonium; +, net formation of ammonium.