Table 2.
Correlations between structural properties and digestibility
| Parameter | Glucan release (%) | Xylan content (%) | Lignin content (%) | Degree of polymerization | Particle size | Aspect ratio | Cell wall thickness | Surface roughness | Delamination/ porosity |
|---|---|---|---|---|---|---|---|---|---|
| Untreated |
24.0 |
22.0 |
12.3 |
2,000 |
0.15 |
1.78 |
1.29 |
7.60 |
3.41 |
| ZC |
68.7 |
8.8 |
24.2 |
1,750 |
0.08 |
1.90 |
3.49 |
10.37 |
5.62 |
| SG |
88.0 |
4.8 |
25.0 |
1,650 |
0.08 |
1.67 |
2.60 |
17.53 |
20.01 |
| HS |
95.2 |
3.2 |
24.8 |
1,850 |
0.07 |
1.49 |
2.30 |
17.61 |
26.57 |
| Correlation coefficient (R) |
|
−1.00 |
0.87 |
−0.28 |
−0.97 |
−0.98 |
−1.00 |
0.97 |
1.00 |
| Correlation coefficient squared (R2) | 1.00 | 0.76 | 0.08 | 0.94 | 0.97 | 1.00 | 0.94 | 1.00 |
HS, horizontal screw; SG, steam gun; ZC, ZipperClave®.