Table 2

Yields of glucose and xylose recovered from the soluble fraction and residue of eucalyptus pretreated with hot-compressed water
Temperature (°C)
 SRa (%)
 Yields of hydrolyzed sugars from
 Total yield (%)
 CrIb (%)






Soluble fraction
 Residue



Glucose (%)
 Xylose (%)
 Glucose (%)
 Xylose (%)

120
 99.1
 0.1
 0.0
 3.8
 0.0
 3.1
 60.4
140
 96.1
 0.3
 0.7
 5.9
 5.3
 6.1
 62.0
160
 85.1
 0.3
 29.9
 23.3
 21.5
 29.3
 67.4
180
 70.0
 1.1
 65.1
 50.5
 9.8
 56.4
 69.4
200
 66.7
 2.3
 15.7
 74.7
 4.1
 65.2
 74.7
220
 62.7
 1.2
 0.0
 72.6
 1.3
 58.8
 NDc
240
 51.8
 1.1
 0.0
 42.5
 0.0
 34.6
 65.6

The glucan and xylan in the soluble fraction were hydrolyzed to monomers with 4% H2SO4. The hot-compressed water (HCW)-treated residue (1%) was hydrolyzed with an enzyme cocktail (40 FPU/g substrate) for 72 hours. The yields of glucose and xylose are calculated based on the glucan and xylan contents, respectively, in the dry weight of untreated biomass. Total yield of hydrolyzed sugars is calculated from the combined contents of glucan and xylan in the dry weight of untreated biomass.

aSolid-remaining yield based on dry weight of HCW-treated residue. bCrystallinity index of the HCW-treated residue. cNot determined.

Inoue et al. Biotechnology for Biofuels 2008 1:2   doi:10.1186/1754-6834-1-2