Table 1.
Lignin content and monosaccharides release (% of sample weight) by cellulase hydrolysis of eucalypt samples
| Eucalypt samples | Lignin (%) | Glucose (%) | Xylose (%) |
|---|---|---|---|
| Initial eucalypt wood |
22.3 ±0.3 |
39.5 ±1.1 |
6.7 ±0.1 |
| Control |
21.1 ±1.0 |
43.7 ±0.2 |
7.5 ±0.1 |
| Laccase (10 U · g-1)-MeS (1%) |
13.3 ±0.1 |
54.8 ±1.0 |
9.2 ±0.2 |
| Laccase (50 U · g-1)-MeS (3%) |
11.2 ±0.3 |
55.7 ±0.4 |
9.1 ±0.1 |
| Laccase (10 U · g-1) |
18.5 ±0.4 |
46.3 ±0.8 |
7.6 ±0.1 |
| Laccase (50 U · g-1) | 16.8 ±0.3 | 47.8 ±1.2 | 8.1 ±0.2 |
Lignin content (as Klason lignin) and monosaccharides from cellulase hydrolysis of eucalypt samples treated with M. thermophila laccase (10 U · g-1 and 50 U · g-1) and methyl syringate (MeS) mediator (1% and 3%) in a sequence including four enzymatic treatments (and four alkaline peroxide extractions) compared with a control without enzyme, a treatment with laccase alone, and the initial eucalypt wood. Means ± SD (from triplicates).