Skip to main content

Table 1 Chemical composition (%) of pretreated sugarcane bagasses, solids yields, and removal of cell wall components during the pretreatments

From: Limitation of cellulose accessibility and unproductive binding of cellulases by pretreated sugarcane bagasse lignin

Pretreatment Chemical composition (g/100 g of pretreated material) Solids yields (%) Removal of cell wall components after pretreatment (%)
Glucan Xylan Lignin Glucan Xylan Lignin
Untreated bagassea 44.8 (1.0) 25.5 (0.4) 24.4 (0.7)
NaOH (5%) 50.5 (0.8) 25.6 (0.3) 20.3 (0.5) 87.3 0.0 19.4 26.3
Na2SO3/NaOH (10%/5%) 52.2 (0.6) 26.1 (0.4) 15.0 (0.7) 81.8 2.3 22.7 48.8
H2SO4 (0.75%) 53.1 (1.0) 13.8 (0.3) 28.8 (1.1) 71.1 13.5 64.1 14.6
NaHSO3/H2SO4 (9%/0.75%) 54.0 (0.3) 10.1 (0.1) 28.3 (0.6) 63.3 21.7 76.7 25.4
Steam explosion/SO2 (3.0%) 56.1 (0.6) 2.0 (0) 35.6 (0.8) 60.8 22.0 95.8 10.0
  1. Values in parentheses are standard deviations
  2. a Untreated bagasse contained 4.5% of water/ethanol-soluble extractives. Pretreated materials were analyzed without previous extraction