Table 2.
Effect of acetate addition on HA production and molecular weight in L. lactis MKG6.
| Without acetate | 5 g/l Acetate | 10 g/l Acetate | 15 g/l Acetate | |
|---|---|---|---|---|
| Biomass (g/l) | 3.36±0.16 | 6.83±0.10 | 7.99±0.23 | 7.2±0.05 |
| HA (g/l) | 3.03±0.4 | 2.5±0.21 | 1.76±0.11 | 1.6±0.06 |
| Relative HA molecular weight | 3.52±0.2 | 4.4±0.14 | 3.5±0.15 | 3.6±0.11 |
| Lactic acid (g/l) | 0.6±0.16 | 0.9±0.12 | 0.83±0.11 | 0.92±0.12 |
| Formate (g/l) | 4.1±0.16 | 7.09±0.11 | 6.2±0.23 | 6.0±0.26 |
| Acetoin (g/l) | 9.28±0.4 | 11.8±0.07 | 10.1±0.03 | 10.8±0.2 |
| Ethanol (g/l) | 9.86±0.32 | 11.31±0.38 | 6.96±0.23 | 8.59±0.14 |
| Acetic acid (g/l) | 1.23±0.05 | 3.5±0.24 | 6.52±0.14 | 10.2±0.07 |
| Yacetoin/S (C-mol/C-mol) | 0.43 | 0.52 | 0.44 | 0.45 |
| Yethanol/S (C-mol/C-mol) | 0.43 | 0.47 | 0.29 | 0.33 |
| NAD+/NADH ratio | 6.97±0.3 | 8.46±0.17 | 6.1±0.09 | 5.99±0.21 |