Table 1 Compositions of EFBs before and after hydrothermal pretreatment
From: Cellulase recycling in high-solids enzymatic hydrolysis of pretreated empty fruit bunches
Biomass component | Compositiona (% of total insoluble solids, w/w) | Recovery yieldb (%, w/w) | |
|---|---|---|---|
Unpretreated | Pretreated | ||
Glucan | 37.4 ± 0.6 | 54.7 ± 1.2 | 98.0 |
Hemicellulose (xylan, arabinan, galactan, and mannan) | 23.9 ± 0.4 | 12.0 ± 0.3 | 33.6 |
Acid-insoluble lignin | 21.1 ± 0.3 | 30.7 ± 0.7 | 92.7 |
Acid-soluble lignin | 0.1 ± 0.0 | 0.1 ± 0.0 | |
Acetyl group | 5.9 ± 0.1 | NM | – |
Ash | 4.2 ± 0.1 | 0.8 ± 0.0 | – |
Hot-water extractives | 10.6 ± 0.4 | NA | – |
Ethanol extractives | 4.8 ± 0.2 | NA | – |