Biomass Pretreatment Enzymatic hydrolysis Enzymatic hydrolysis Reference
Substrate (%)
Conversion rate (%)
Aspen Eucalyptus Sulfite pretreatment (4% sodium bisulfite with or without sulfuric acid, 180 ℃, 30 min) Sulfite pretreatment Dilute acid
2%
90-95% (20 FPU + 30 CBU ꞵ-glucosidase g-1 cellulose, 12 h) 90% (48 h) 82% (48 h)
[26]
Spruce Red pine Sulfite pretreatment (8-10% bisulfite and 1.8-3.7% sulfuric acid, 180 ℃, 30 min) Dilute acid pretreatment Sulfite pretreatment (8-10% bisulfite and 1.8-3.7% sulfuric acid, 180 ℃, 30 min)
2%
~90% (14.6 FPU+22.5 CBU ꞵ-glucosidase, 48 h) 40% 98% (14.6 FPU+22.5 CBU ꞵ-glucosidase, 48 h)
[27]
Corn stover Poplar Pine Steam explosion Organosolv Steam explosion Organosolv Steam explosion Organosolv
2%
65% (Cellulast, 48 h) 70% (Cellulast, 48 h) 52% (Cellulast, 48 h) 70% (Cellulast, 48 h) 37% (Cellulast, 48 h) 52% (Cellulast, 48 h)
[25]
Pine
HPAC (peroxide hydrogen: acetic acid = 1:1, 80 ℃, 2 h)
2%
87.5% (10 FPU Cel+ Xyl+Bgl, 12 h) a 74.6% (20 FPU Cel+Xyl+Bgl, 24 h) b
This study