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. 2022 Oct 22;9:647. doi: 10.1038/s41597-022-01709-4

Table 4.

Comparison of the structural compositions of generated structures and experimental data for Spruce and Birch MWL with degrees of polymerization of 20 and 18, respectively.

Spruce – MWL Birch – MWL
ref. 5,30 LGS Dataset ref. 39 LGS Dataset
Mw (g mol−1) 3700 3538–3722 3294 3326–3570
Degree of polymerization 20 20 18 18
Interunit linkages
β-O-4 (β-aryl ether) 12 12–14 12 10–13
β-β (Resinol) 1 1–2 3 2–3
β-5 (phenylcoumaran) 2 2–3 1 1 – 2
4-0-5 (Diaryl ether) 1 1 1 1–2
5-5 (Biphenyl) or DBDO (Dibenzodioxocin) 1 1 0 0–1
Functional groups
OH-Phenolic (free) 2 2–4 4 3–7
OH-Aliphatic (primary) 11 11–14 N/A 10–13
OH-Aliphatic (secondary) 18 16–18 13 11–14
End group - Cinnamyl alcohol 2 0–1 2 0–2