Table 1.
Mucic acid production characteristics of marine fungi in 24-well plates
| Strain | T2 | T3 | D-161646 | C1 | C2 | C3 |
|---|---|---|---|---|---|---|
| Lactose | ||||||
| Mucic acid (g L−1) | 8.0 ± 0.2 aA | 7.7 ± 0.0 aB | 5.4 ± 0.2 bA | |||
| Yield mucic acid/d-galacturonic acid (g g−1) | 1.20 ± 0.05 a | 1.13 ± 0.00 a | 0.88 ± 0.05b | |||
| d-Xylose | ||||||
| Mucic acid (g L−1) | 7.9 ± 0.3aA | 7.8 ± 0.2aB | 4.1 ± 0.1bB | 3.4 ± 0.2aA | 2.3 ± 0.1bA | 1.0 ± 0.0cA |
| Yield mucic acid/d-galacturonic acid (g g−1) | 1.28 ± 0.05a | 1.29 ± 0.08a | 1.11 ± 0.18a | 0.50 ± 0.03a | 0.37 ± 0.01b | 0.14 ± 0.01c |
| Glycerol | ||||||
| Mucic acid (g L−1) | 6.4 ± 0.2aB | 5.3 ± 0.3bA | 4.6 ± 0.1cB | 4.5 ± 0.2aB | 2.3 ± 0.1bA | 1.2 ± 0.6cA |
| Yield mucic acid/d-galacturonic acid (g g−1) | 1.23 ± 0.02a | 0.98 ± 0.04b | 0.63 ± 0.02c | 0.57 ± 0.02a | 0.29 ± 0.02b | 0.16 ± 0.01c |
| d-Glucose | ||||||
| Mucic acid (g L−1) | 6.5 ± 0.1aB | 6.6 ± 1.1aAB | 2.8 ± 0.2bC | 5.1 ± 0.4aB | 2.5 ± 0.2bA | 1.1 ± 0.1cA |
| Yield mucic acid/d-galacturonic acid (g g−1) | 1.19 ± 0.01a | 1.24 ± 0.05a | 0.75 ± 0.09b | 0.82 ± 0.05a | 0.42 ± 0.02b | 0.17 ± 0.01c |
Marine Trichoderma sp. LF328 transformants (T2 and T3) and Coniochaeta sp. MF729 transformants (C1, C2 and C3) were grown in 24-well plates with d-galacturonic acid as substrate and lactose, d-xylose, glycerol or d-glucose as co-substrate. T. reesei Δgar1 udh strain D-161646 was used as a positive control. Values are mean ± standard error of the mean for n = 3 biological replicates. Values for the same specie in the same row with the same superscript letter (a to c) did not differ significantly (p > 0.05). Values for mucic acid concentration in the same column with the same superscript letter (A to C) did not differ significantly (p > 0.05)