Table 2.
Different pre-treatment methods and their process conditions for enzymatic hydrolysis of SCB
| Pre-treatment | Temp (oC) | Time (h) | Agitation (rpm) | pH | Maximum glucose yield (%) | Source |
|---|---|---|---|---|---|---|
| Steam | 40 | 72 | 300 | – | 85 | Carrasco et al. (2010) |
| Steam | 50 | – | 150 | 4.8 | 92–94 | Ewanick and Bura (2011) |
| Alkaline | 45 | 72 | 120 | 4.8 | - | Nosratpour et al. (2018) |
| Alkaline | 50 | – | 100 | 4.8 | 87.5 | Rabelo et al. (2008) |
| Alkaline | 50 | 72 | – | 4.8 | 87 | Antunes et al. (2018) |
| Alkaline | 40 | 6 | – | 6.0 | 91.28a, b | Velmurugan and Muthukumar (2012) |
| Alkaline | 45 | 26 | 150 | 4.8 | 92.11b | Velmurugan and Muthukumar (2012) |
| Steam and alkali | 50 | 96 | 150 | 4.5 | – | Adsul et al. (2007) |
| Organosolv | 50 | 24 | 150 | 4.8 | 0.285 (g/g) | Mesa et al. (2010) |
| Steam | 45 | 72 | 100 | 4.8 | 89.2c | Silva et al. (2011) |
| Steam | 50 | 72 | 150 | 5.0 | 86 | Da Silva et al. (2016) |
| LHW | 50 | 72 | 90 | 4.5 | 0.432 (g/g) | Wang et al. (2018) |
| Steam | 50 | 48 | 130 | 5.0 | – | Carvalho et al. (2018) |
| Steam | 45 | 96 | 150 | 4.8 | – | Pitarelo et al. (2016) |
aYield of ethanol from final fermentation, bultrasound-assisted process, ccellulose conversion