Table 1 Composition of the rice straw hemicellulosic hydrolysate as its major constituents
Components | Units | RSHH |
|---|---|---|
Total solids | (g/L) | 305.0 ± 1.9 |
Ash | (g/L) | 31.4 ± 0.6 |
Carbohydrates and aliphatic acids | ||
Xylose | (g/L) | 115.9 ± 1.0 |
Glucose | (g/L) | 20.8 ± 0.1 |
Arabinose | (g/L) | 21.2 ± 0.2 |
Acetic acid | (g/L) | 1.96 ± 0.01 |
Furans | ||
Furfural | (mg/L) | 211 ± 4 |
Hydroxymethylfurfural | (mg/L) | 116 ± 10 |
Phenolic compounds | ||
Total phenolic compounds | (g/L) | 12.9 ± 0.8 |
Low molecular weight phenolic compounds | ||
Ferulic acid | (mg/L) | 270 ± 8 |
p- coumaric acid | (mg/L) | 106 ± 2 |
Syringic acid | (mg/L) | 53 ± 3 |
Vanillic acid | (mg/L) | 32 ± 4 |
Vanillin | (mg/L) | 28 ± 6 |
Hydroxybenzoic acid | (mg/L) | 14 ± 3 |
Minerals | ||
Sulfate | (mg/L) | 9998 ± 1195 |
K | (mg/L) | 5779 ± 233 |
Fe | (mg/L) | 1765 ± 99 |
Mn | (mg/L) | 1217 ± 25 |
Mg | (mg/L) | 923 ± 40 |
Phosphate | (mg/L) | 927 ± 99 |
Cr | (mg/L) | 332 ± 50 |
Al | (mg/L) | 266 ± 23 |
Na | (mg/L) | 195 ± 36 |
Ca | (mg/L) | 137 ± 58 |
Zn | (mg/L) | 30 ± 4 |
Cu | (mg/L) | 0.4 ± 0.2 |