Table 1 Physical and chemical characterization of the birch wood, steam-exploded birch wood, cow manure, and start-up inoculums
Sample | Size mm | TS% | VS% | Lignina %a | Glucoseb | Xylanb | Arabinanb | Galactanb |
|---|---|---|---|---|---|---|---|---|
Birch wood | 15–30 | 81 | 70.9 | 20 | 36.4 | 16.5 | 1.1 | 1.5 |
Cow manure | 16.6 | 12.5 | 26.8 | 27.2 | 16 | 5.7 | – | |
Steam exploded birch wood | < 3 | 43 | 37.2 | 40.3 | 42 | 14.8 | 0.8 | 1.2 |
Inoculum 1 | – | 4.7 | 3.67 | – | – | – | – | – |
Inoculum 2 | – | 6.7 | 5.4 | – | – | – | – | – |