Research Article
Optimization of Sulfide/Sulfite Pretreatment of Lignocellulosic Biomass for Lactic Acid Production
Table 4
Optimized hydrolysis yield with independent variables used during pretreatment.
| | Substrate | Catalyst | Catalyst
(%) | Time
(h) | Temperature
(°C) | Hydrolysis yield (%)
(pretreatment) | Hydrolysis yield (%)
(enzymatic) |
| Corncob
| Na2S | 1.0 | 2.34 | 130.0 | n.d. | 88.43 | | Na2SO3 | 1.0 | 2.30 | 130.0 | n.d. | 86.32 | | Bagasse | Na2S | 1.0 | 3.00 | 130.0 | n.d. | 87.91 | | Na2SO3 | 1.0 | 2.00 | 130.0 | n.d. | 84.06 | | Water hyacinth | Na2S | 1.0 | 3.00 | 130.0 | n.d. | 85.93 | | Na2SO3 | 1.0 | 2.39 | 130.0 | n.d. | 86.34 | | Rice husk | Na2S | 1.0 | 2.95 | 128.0 | n.d. | 79.40 | | Na2SO3 | 1.0 | 2.78 | 125.8 | n.d. | 77.17 |
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n.d.: not determined due to dark-color liquor and absence of monomer sugars in TLC images.
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