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. 2019 Nov 20;11(12):1913. doi: 10.3390/polym11121913

Table A1.

Overview of extraction efficiencies and lignin properties of all extractions performed in the flow setup. All results of 2 and 5 h extractions are weight average properties. 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), e manually ground walnut shell, f 4 h extraction due to the reactor clogging. Data per 1 hr interval are reported in Tables S1–S14 and the formula for the calculations of the average values is given in SI 1.

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 Delignification (%) Solvent Used (g) Solvent Efficiency (mg/g)
2 h 5 h 2 h 5 h 2 h 5 h 2 h 5 h 2 h 5 h 5 h 2 h 5 h 2 h 5 h
1 Walnut shell 80:20 EtOH/H2O, 0.18 M H2SO4 31 52 0 1.5 64 62 4/38/58 3/35/62 1936 2285 76 138 339 21 14
2 e 80:20 EtOH/H2O, 0.12 M H2SO4 14 39 0 1 62 64 5/44/51 2/37/61 2155 3030 - 144 278 9 13
3 e 80:20 EtOH/H2O, 0.18 M H2SO4, 32 46 2 3 61 58 4/41/55 2/35/63 3278 3742 - 141 318 21 13
4 e 80:20 EtOH/H2O, 0.24 M H2SO4 18 41 0 5 60 55 3/42/55 2/36/62 2327 3177 - 105 183 16 20
5 f 50:50 EtOH/H2O, 0.18 M H2SO4 23 36 2 3 54 52 4/36/60 2/34/64 1670 1684 - 141 231 15 14
6 95:5 EtOH/H2O, 0.18 M H2SO4 35 57 7 12 56 44 2/36/62 1/32/67 3336 3278 79 114 290 28 18
7 80:20 nPrOH/H2O, 0.18 M H2SO4 33 57 0 0.5 67 66 4/36/60 3/34/63 2529 3657 64 147 321 21 16
8 f 80:15:5 nBuOH/1,4-dioxane/H2O, 0.18 M H2SO4 48 74 5 10 62 54 2/32/66 1/30/69 5990 5605 83 113 253 39 27
9 80:15:5 nEtOH/1,4-dioxane/H2O, 0.18 M H2SO4 39 53 3 5 56 54 4/36/60 2/35/63 2570 2698 - 125 301 31 18
10 80:15:5 nPrOH/1,4-dioxane/H2O, 0.18 M H2SO4 35 59 6 11.5 60 54 2/36/62 1/34/65 2892 3047 - 95 257 39 22
11 95:5 EtOH/H2O, 0.18 M H2SO4,
40 g loading		 58 82 8 10 53 45 3/34/63 2/34/64 3015 2872 77 129 313 83 49
12 Poplar/
spruce		 95:5 EtOH/H2O, 0.18 M H2SO4 11 20 0 0 64 57 0/83/17 0/84/16 3375 3408 25 117 290 7 5
13 Cedar 95:5 EtOH/H2O, 0.18 M H2SO4 18 29 10 19 45 38 0/100/0 0/100/0 2716 2916 26 112 292 17 11
14 Beech 95:5 EtOH/H2O, 0.18 M H2SO4 22 44 8 18 58 43 0/22/78 0/18/82 3800 3317 73 106 274 13 10