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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
  1. NM not measured; NA not applicable
  2. aExperimental data are expressed as mean ± standard deviation
  3. bBased on the insoluble recovery after washing with water, 67.0% (w/w)