TABLE 3.
Comparison of calculated and experimental values for μmax, YX/S, mS, Xmax, Bmax, kb, and kinact for L. sake CTC 494 at a given combination of pH and temperaturea
| Temp (°C) | pH | Calculated (exptl) value for:
|
|||||
|---|---|---|---|---|---|---|---|
| μmax (h−1) | YX/S (g of CDM g of glucose−1) | mS (g of glucose h−1 g of CDM−1) | Xmax (g liter−1) | kb (kAU g of CDM−1) | kinact (liter g of CDM−1 h−1) | ||
| 20 | 6.5 | 0.29 (0.27) | 0.37 (0.39) | 0.33 (0.32) | 2.75 (2.72) | 1,750 (1,700) | 0.05 (0.05) |
| 23 | 5.0 | 0.25 (0.25) | 0.32 (0.33) | 0.20 (0.18) | 2.24 (2.12) | 8,010 (2,950) | 0.01 (0.02) |
| 25 | 6.5 | 0.41 (0.45) | 0.30 (0.31) | 0.46 (0.40) | 2.70 (2.68) | 2,290 (2,250) | 0.09 (0.09) |
| 25 | 5.5 | 0.37 (0.38) | 0.34 (0.32) | 0.31 (0.26) | 2.48 (2.68) | 2,870 (2,800) | 0.03 (0.03) |
| 30 | 6.5 | 0.56 (0.56) | 0.25 (0.25) | 0.60 (0.56) | 2.14 (2.15) | 800 (800) | 0.15 (0.16) |
| 30 | 5.5 | 0.51 (0.53) | 0.29 (0.29) | 0.41 (0.50) | 1.96 (1.98) | 1,000 (1,000) | 0.05 (0.04) |
| 30 | 5.0 | 0.39 (0.39) | 0.25 (0.24) | 0.32 (0.35) | 1.71 (1.90) | 2,600 (2,600) | 0.03 (0.03) |
| 30 | 4.5 | 0.21 (0.23) | 0.16 (0.15) | 0.16 (0.12) | 0.90 (0.90) | 0 (0) | —b |
| 35 | 6.5 | 0.73 (0.71) | 0.23 (0.23) | 0.67 (0.70) | 1.57 (1.67) | 0 (0) | — |
r2 values for μmax, YX/S, mS, Xmax, kb, and kinact were 0.987, 0.998, 0.935, 0.968, 0.999 (the kb values for 23°C and pH 5.0 were omitted), and 0.989, respectively.
—, not relevant.