Component

Content (% on oven-dry matter)

Ash
silica SiO2
Extractives
dichloromethane
ethanol
water
Lignin
Klason (acid-insoluble)
acid-soluble
Holocellulose
α-cellulose
hemicelluloses
fraction A
fraction B

5.44 ± 0.02
0.08 ± 0.01
7.36 ± 0.14
0.41 ± 0.01
3.25 ± 0.19
3.70 ± 0.21
18.19 ± 0.05
15.46 ± 0.03
2.73 ± 0.07
69.87 ± 0.03
39.28 ± 0.05
30.59 ± 0.08
25.30 ± 0.06
5.29 ± 0.09

Table 1: Chemical composition of cardoon stem-wall material.