Table 3 The standard deviation and relative standard deviation of the experimental errors in the NMR measurements for different lignin moieties.
From: SP-LCC — a dataset on the structure and properties of lignin-carbohydrate complexes from hardwood
Entry | Lignin moiety | Uncertainty from the biorefinery process (I) | Uncertainty from NMR measurement (II) | ||
|---|---|---|---|---|---|
Standard deviation (per 100 Ar) | Relative standard deviation (%) | Standard deviation (per 100 Ar) | Relative standard deviation (%) | ||
1 | Syringyl/Guaiacyl ratio | 0.02 | 0.78 | 0.02 | 0.7 |
2 | Acetyl groups | 0.24 | 3.92 | 0.08 | 0.9 |
3 | Alkyl-Alkyl | 0.06 | 3.69 | 0.09 | 2.3 |
4 | Alkyl-Aryl | 0.21 | 10.44 | 0.85 | 7.51 |
5 | γ-esters | 0.01 | 1.06 | 0.12 | 20.81 |
6 | β-O-4/α-OH | 0.62 | 2.96 | 0.03 | 1.84 |
7 | BE total | 0.10 | 3.08 | 0.01 | 0.25 |
8 | α-CO/β-O-4 | 0.02 | 1.87 | 0.04 | 3.54 |
9 | Resinol (β-β) | 0.03 | 0.51 | 0.05 | 0.75 |
10 | Phenylcoumaran (β-5) | 0.05 | 2.02 | 0.03 | 1.20 |
11 | GlcU Acid | 0.03 | 5.14 | 0.01 | 5.67 |
12 | GlcU Esters | 0.02 | 4.24 | 0.00 | 0.00 |
13 | PhGly | 0.03 | 8.21 | 0.00 | 0.00 |
14 | Terminal carbohydrate | 0.12 | 5.50 | 0.03 | 1.60 |
15 | Internal carbohydrate | 0.61 | 5.27 | 0.06 | 1.45 |
16 | Total carbohydratea | 0.71 | 5.20 | 0.09 | 1.50 |
17 | Carbohydrate DPb | 0.22 | 3.42 | 0.00 | 0.10 |
18 | Conjugated Syringyl | 0.76 | 7.05 | 0.28 | 1.78 |
19 | Conjugated COOH | 0.05 | 4.65 | 0.01 | 0.70 |
20 | Conjugated Guaiacyl | 0.10 | 2.47 | 0.02 | 0.48 |
21 | Vinyl-Ar | 0.69 | 3.56 | 0.06 | 4.02 |
22 | Vinyl-Alk | 0.15 | 2.28 | 0.12 | 1.12 |
23 | Vinyl Ox | 0.01 | 0.72 | 0.06 | 3.17 |
24 | Fur-CHO | 0.02 | 11.11 | 0.01 | 2.54 |
25 | Ar-CHO | 0.24 | 16.42 | 0.04 | 1.08 |
26 | Average RSD | 4.62 | 2.60 | ||
