TABLE 1.
Bioenergetic parameters for P. furiosus growing in chemostat cultures on maltose, cellobiose, and tryptone in the presence and absence of S0a
| Substrate(s) | Cell density (108 cells/ml) | Total protein (mg/liter) | QS (mmol/g/h) | QA (mmol/g/h) | QAla (mmol/g/h) | QE (mmol/g/h) | QH2 (mmol/g/h) | QH2S (mmol/g/h) | QCO2 (mmol/g/h) | QH2+H2S (mmol/g/h) | Doubling time for batch growth (min) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maltose | 2.0 | 37 | 24.7 | 24.5 | 8.2 | ND | 63.6 | ND | 34.8 | 63.6 | 80 |
| Maltose + S0 | 4.1 | 142 | 18.1 | 24.5 | 0.1 | ND | ND | 55.1 | 31.4 | 55.1 | 40 |
| Cellobiose | 2.4 | 66 | 25.0 | 37.1 | 5.2 | 2.9 | 94.6 | ND | 47.8 | 94.6 | 90 |
| Cellobiose + S0 | 3.1 | 84 | 19.8 | 26.1 | 4.0 | 2.3 | 43.6 | 17.9 | 30.1 | 61.5 | 50 |
| Tryptone + S0 | 2.4 | 122 | NA | 6.5 | ND | ND | ND | 46.6 | 25.1 | 46.6 | 42b |
a
Abbreviations: QS, specific rate of consumption of substrate per gram of protein; QA, specific rate of production of acetate per gram of protein; QAla, specific rate of production of alanine per gram of protein; QE, specific rate of production of ethanol per gram of protein; QH2, specific rate of production of H2 per gram of protein; QH2S, specific rate of production of H2S per gram of protein; QCO2, specific rate of production of CO2 per gram of protein; QH+H2S, combined specific rates of production of H2 and H2S; ND, not detected; NA, not applicable.
b
Data from reference 50.