TABLE 2.
Lignocellulose-derived Inhibitors (LDIs) in SynH3.
| LDIs (μM) | SynH21 | SynH3 |
| Amides | ||
| Feruloyl amide | 2750 | 4230 |
| Coumaroyl amide | 2750 | 7130 |
| 4-Hydroxybenzamide | − | 85 |
| Syringamide | − | 140 |
| Acids | ||
| p-Coumaric acid | 1050 | 1440 |
| Ferulic acid | 355 | 180 |
| Benzoic acid | 480 | 320 |
| Syringic acid | 80 | 65 |
| Cinnamic acid | 90 | 135 |
| Vanillic acid | 90 | 10 |
| Caffeic acid | 10 | 15 |
| 4-Hydroxybenzoic acid | − | 145 |
| Azelaic acid | − | 30 |
| Aldehydes, ketones, and related compounds | ||
| Vanillin | 132 | 20 |
| Syringaldehyde | 162 | 20 |
| 4-Hydroxybenzeldehyde | 197 | 220 |
| 4-Hydroxyacetophenone | 25 | 15 |
| Acetosyringone | − | 20 |
| Acetovanillone | − | 20 |
| Furfural | − | 45 |
| Hydroxymethylfurfural (HMF) | 550 | − |
| Pyrazines and imidazoles | ||
| 2-Methylimidazole | − | 63 |
| 4(5)-Methylimidazole | − | 129 |
| 2, 4-Dimethylimidazole | − | 21 |
| 2-Methylpyrazine | − | 9 |
| 2, 6-Dimethylpyrazine | − | 1.5 |
1Composition of LDIs in SynH2 was from paper published previously (Keating et al., 2014).- Not added in SynH2 or SynH3.