Table 1 Sugars and byproducts from H2SO4 and Ca(OH)2 pretreatment of lignocellulosic fibers. Lignocellulosic fiber [6% (w/v)] was pretreated by 2% (w/v) H2SO4 or 0.1% (w/v) Ca(OH)2 at 121°C, 15 lb/in2 for 30 min. The results are displayed as the mean ± 1 SD, and are derived from triplicate determinations. HMF Hydroxymethylfurfural
Pretreatment byproducts(g/1) | |||||||
|---|---|---|---|---|---|---|---|
Pre-treatment | Glucose | Xylose | Purpural | HMF | Syringaldehyde | 4-Hydroxybenzaldehyde | Vanillin |
H2SO4 | 8.4 ± 0.01 | 8.2 ± 0.06 | - | - | - | - | - |
Ca(OH)2 | 0.16 ± 0.01 | 0.08 ± 0.01 | - | - | - | - | 0.02 ± 0.0003 |