Lignin in Cell-Wall Layers of
Softwood and Hardwood Fibers
Tissue
Volume
13
60
9
12
44
9
Lignin
Concentration
25
20
28
Middle Lamella +
Primary Wall
12
21
49
Cell Corner
6
14
64
6
80
5
6
63
6
23
18
25
Middle Lamella +
Primary Wall
6
14
51
Cell Corner
3
11
78
White Birch
Fiber 2ndary Cell Wall
73
60
19
Middle Lamella +
Primary Wall
5
9
40
Cell Corner
2
9
Loblolly Pine
Early Wood
Late Wood
Cell Wall
Layer
S1
S2
S3
S1
S2
S3
% Total Lignin
85
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