Table 5 Final concentrations of potential inhibitory substances in SSF experiments with 1% w/w cellulose concentration with added hydrolysate from the first pretreatment stage
From: Two-stage steam explosion pretreatment of softwood with 2-naphthol as carbocation scavenger
2-Naphthol (mol/mol C9) | Concentration (g/l) | |||
|---|---|---|---|---|
Acetic acid | HMF | Furfural | 2-Naphthol | |
Washed solids | ||||
0 (control) | 0.157 | 0.037 | 0.055 | 0 |
0.051 | 0.167 | 0.040 | 0.058 | 0.013 |
0.103 | 0.171 | 0.040 | 0.060 | 0.026 |
0.205 | 0.165 | 0.039 | 0.057 | 0.067 |
Filtered solids | ||||
0 (control) | 0.279 | 0.237 | 0.076 | 0 |
0.051 | 0.269 | 0.213 | 0.078 | 0.017 |
0.103 | 0.272 | 0.226 | 0.073 | 0.027 |
0.205 | 0.268 | 0.217 | 0.073 | 0.072 |
Whole slurry | ||||
0 (control) | 0.399 | 0.432 | 0.096 | 0 |
0.051 | 0.395 | 0.418 | 0.102 | 0.017 |
0.103 | 0.406 | 0.455 | 0.094 | 0.030 |
0.205 | 0.396 | 0.431 | 0.093 | 0.076 |