TABLE 2.
μmax, YXtot-S, C and e recoveries, and protein conversion factora for batch cultures of S. fumaroxidans grown in a monoculture or in a coculture with M. hungatei on either propionate alone or propionate plus sulfateb
| Culture | Substrate | YXtot-S (g [dw] mol−1) | μmax (day−1) | C recoveryc (%) | e recoveryc (%) | Conversion factor |
|---|---|---|---|---|---|---|
| Monoculture | Propionate + SO42− | 1.24 (0.21) | 0.020 (0.002) | 103 (2) | 95 (2) | 3.0 (0.5) |
| Coculture | Propionate | 1.57 (0.07) | 0.208 (0.012) | 113 (1) | 99 (1) | 2.5 (0.2) |
| Coculture | Propionate + SO42− | 1.28 (0.04) | 0.089 (0.005) | 107 (2) | 97 (2) | 2.3 (0.2) |
a
Conversion factor for protein to dw.
b
Values in parentheses represent 1 standard deviation of the measured values (n = 3).
c
For the calculation of C and e recovery, the total dw was calculated by multiplying the measured protein concentration by the determined conversion factor. C4H7.2O2N0.8 was used as the structural formula for biomass.