Table 3.
Comparative study between algal biomass and terrestrial plants for bioethanol production.
| Feedstock | Conditions | Bioethanol | Reference |
|---|---|---|---|
| ALGAE | |||
| Chlorococcum infusionum | Alkaline pre-treatment, temp. 120°C, S. cerevisiae | 260 g ethanol/kg algae | Harun et al. (2011) |
| Spirogyra | Alkaline pre-treatment, synthetic media growth, saccharification of biomass by Aspergillus niger, fermentation by S. cerevisiae | 80 g ethanol/kg algae | Eshaq et al. (2010) |
| Chlorococcum humicola | Acid pre-treatment, temp. 160°C, S. cerevisiae | 520 g ethanol/kg microalgae | Harun and Danquah (2011a) |
| TERRESTRIAL PLANTS | |||
| Madhuca latifolia | Strain Zymomonas mobilis MTCC 92, immobilized in Luffa cylindrical sponge disks, temp. 30°C | 251.1 ± 0.012 g ethanol/kg flowers | Behera et al. (2011) |
| Manihot esculenta | Enzyme termamyl and amyloglucosidase, 1 N HCl, Saccharomyces cerevisiae, ca-alginate immobilization | 189 ± 3.1 g ethanol/kg flour cassava | Behera et al. (2014) |
| Sugarcane bagasse | Acid (H2SO4) hydrolysis, Kluyveromyces sp. IIPE453, Fermentation at 50°C | 165 g ethanol/kg bagasse | Kumar et al., 2014 |
| Rice straw | Cellulase, β-glucosidase, solid state fermentation, strain Trichoderma reesei RUT C30, and Aspergillus niger MTCC 7956 | 93 g ethanol/kg pretreated rice straw | Sukumaran et al. (2008) |