Table 2 Glucurono-arabinoxylans (GAX) crude yields, mass balance for GAX components, and recovery percentages from alkaline-sulfite-pretreated sugarcane bagasse
From: Xylan extraction from pretreated sugarcane bagasse using alkaline and enzymatic approaches
Recovered material or component (g/100 g of original bagasse) | Untreated bagasse | Pretreated bagasse | Alkaline-extracted GAX (Hoije method) | Alkaline-extracted GAX (Lopez method) | Enzymatically extracted GAX |
|---|---|---|---|---|---|
Crude mass | 100 | 88.6 | 18.1 | 21.4 | 7.0 |
Xylan | 22.4 | 20.6 | 11.2 | 13.7 | 5.1 |
Arabinosyl groups | 2.6 | 2.5 | 1.4 | 1.5 | 0.8 |
Uronic acid groups | 2.5 | 2.1 | 1.2 | 1.2 | 0.9 |
Acetyl groups | 3.3 | 0.2 | 0.0 | 0.0 | 0.0 |
Total GAX | 30.8 | 25.4 | 13.8 | 16.4 | 6.8 |
GAX recovery (%) | 100.0 | 82.3 | 44.6 | 53.3 | 22.1 |