Tree species (common name) Xylan* Glucan* Other sugars* Lignin
(wt %) (wt %) (wt %) (wt %)
Angiosperms
Betula papryrifera (White 26 43 2.9 19
birch)
Platanus occidentalis 18 44 4.9 20
(American sycamore)
Populus tremuloides (Quaking 17 49 4.6 21
aspen)
Populus deltoides (Eastern 19 14.5b 42 43.2b 4.7 3.2b 24 26.8b
cottonwood)
Quercus falcata (Southern 19 41 3.6 24
red oak)
Eucalyptus grandis 19 54 -- 26
Agricultural residues
Bagasse 21.8b 39.7b 2.8b 25.2b
Corn stalks 18.9 35.9 4.1 nd
Soybean stalks and leaves 11.8 32.1 6.7 nd
Wheat straw 16.5 31.4 37.0b 4.0 3.7b nd 23.4b
22.1b
Switchgrass*
(elemental composition): Carbon, 47% , hydrogen, 5%, oxygen, 42%; nitrogen, 0.5% and sulfur 0.1%
Gymnosperms
Pinus resinosa (Red pine) 9.3 42 11.6c 29
Pinus strobus (Eastern white 6.0 45 14.4c 29
pine)
Pinus taeda (Loblolly pine) 6.8 45 15.0c 28
Pseudotsuga menziesii 2.8 44 18.4c 32
(Douglas fir)
Thuja occidentalis (Northern 10 43 10.6c 31
white cedar)
Pinus radiata (Radiata pine) 6.4b 43b 14.0b,c 27.1b
*Given as the anhydropolymer;
bdata from reference 3;
cChiefly mannan;
nd = not determined
*For further information write to Bob Dawson of the Iowa State University Biomass project