Table 2.
Comparison of bioethanol yields achieved in this work and in the previous studies.
| Material | Pretreatment | Soluble Sugars & Starch | Enzymatic Hydrolysis | Estimated Total Ethanol Yield | Ref. | ||
|---|---|---|---|---|---|---|---|
| Hexoses | Pentoses | Hexoses | Pentoses | ||||
| (% DM) | (% DM) | (% DM) | (% DM) | (% DM) | |||
| Banana (Refen1) Pseudostem (PS-2) | 1% NaOH | 42.4 | 5.3 | 22.8 | 9.2 | 38.4 | This study |
| LHW *, 200 °C, 16 min | 40.7 | 10.2 | 21.7 | 2.5 | 36.4 | ||
| Banana (Refen1)Rachis (RC-2) | 1% NaOH | 36.1 | 4.6 | 21.8 | 8.9 | 34.3 | |
| LHW, 200 °C, 16 min | 33.6 | 8.0 | 23.1 | 11.8 | 30.9 | ||
| Wheat straw | Subcritical water, 220 °C, 22 min | ND | 18.4 | 25.9 | 1.8 | 29.6 | [33] |
| Corn straw | LHW, 200 °C, 20 min | 23.7 | 3.6 | 16.5 | 5.1 | 19.3 | [24] |
| Sweet sorghum stalk | Supercritical carbon dioxide | ND | ND | 43.6 | ND | 22.3 | [34] |
| Sugarcane bagasse | Sulfite-NaOH | 10.2 | 33.3 | 40 | 16.5 | 26.2 | [35] |
| Miscanthus straw | Green liquor, 32%, 150 °C, 32 min | 0.1 | 15.1 | 34.2 | 15.1 | 17.1 | [20] |
| Poplar stem | 8% NaOH | 5.7 | 3.2 | 31.8 | ND | 10.1 | [36] |
* Liquid hot water, DM: Dry matter, ND: Not detected.