Table A2.
Overview of extraction efficiencies and lignin properties of all extractions performed in batch setup. a Corrected for alcohol incorporation determined by HSQC, b determined by HSQC, c based on the amount of condensed S units (Scondensed), d determined by GPC (THF).
| Entry | Source | Conditions | Extraction Efficiency (%) a | Condensation (%) b,c | β-O-4 Content (per 100 C9 units) b |
H/G/S Ratio (%) b | Molecular Weight (Da) d | Solvent Used (g) | Solvent Efficiency (mg/g) |
|---|---|---|---|---|---|---|---|---|---|
| 15 | Walnut shell | 80:20 EtOH/H2O, 0.18 M H2SO4 | 46 | 13 | 28 | 0/36/64 | 2450 | 83 | 25 |
| 16 | 50:50 EtOH/H2O, 0.18 M H2SO4 | 38 | 11 | 38 | 0/35/65 | 2610 | 90 | 20 | |
| 17 | 95:5 EtOH/H2O, 0.18 M H2SO4 | 40 | 24 | 10 | 0/42/58 | 2070 | 80 | 23 | |
| 18 | 80:20 nPrOH/H2O, 0.18 M H2SO4 | 39 | 2 | 60 | 3/36/61 | 3360 | 84 | 21 | |
| 19 | 80:15:5 nBuOH/1,4-dioxane/H2O, 0.18 M H2SO4 | 43 | 17 | 44 | 1/34/65 | 3800 | 85 | 23 | |
| 20 | Poplar/spruce | 95:5 EtOH/H2O, 0.18 M H2SO4 | 9 | 12 | 30 | 0/82/18 | 2280 | 80 | 4 |
| 21 | Cedar | 95:5 EtOH/H2O, 0.18 M H2SO4 | 28 | 16 | 8 | 0/100/0 | 2160 | 80 | 16 |
| 22 | Beech | 95:5 EtOH/H2O, 0.18 M H2SO4 | 19 | 27 | 26 | 0/35/65 | 2000 | 80 | 8 |