Pretreatments | H2yield(mmol H2 g−1substrate) | Concentration of end metabolites (mmol L−1) | ||||
---|---|---|---|---|---|---|
Acetate | Butyrate | Ethanol | Butanol | Propionate | ||
Untreated | 2.2 ± 0.03 | 9.1 ± 0.3 | 5.5 ± 0.1 | 2.1 ± 0.05 | 0.8 ± 0.03 | 0.5 ± 0.02 |
Alkaline pretreatment | 7.2 ± 0.2 | 24.8 ± 0.4 | 13.3 ± 0.05 | 6.6 ± 0.03 | 1.0 ± 0.03 | 0.7 ± 0.03 |
Acid pretreatment | 4.2 ± 0.1 | 17.2 ± 0.2 | 10.7 ± 0.1 | 4.8 ± 0.03 | 0.9 ± 0.04 | 0.6 ± 0.01 |
Fungal pretreatment | 6.8 ± 0.2 | 23.2 ± 0.6 | 12.9 ± 0.2 | 5.7 ± 0.2 | 1.2 ± 0.01 | 0.6 ± 0.02 |