Table 1 Chemical content and structural properties of SGCS and UGCS

Cellulose (Mean ± SD,  % dry matter)

33.44 ± 0.43

33.38 ± 0.20

Hemicellulose (Mean ± SD,  % dry matter)

17.58 ± 0.19

17.47 ± 0.01

Lignin (Mean ± SD,  % dry matter)

25.21 ± 0.23

24.35 ± 0.55

Particle size (Mean ± SD, d ₅₀, μm)

218.50 ± 2.12

17.45 ± 0.21

Span (Mean ± SD, (d ₉₀–d ₁₀)/d ₅₀)

2.93 ± 0.07

2.72 ± 0.01

Specific surface area (m²/g)

1.71

2.63

Pore volume (V _p, cm³/g)

0.009

0.024

Accessible pore volume (V _pa, cm³/g)

0.008

0.023

Cellulose surface area (m²/g)

168.69

290.76

Lignin surface area (m²/g)

91.46

106.70