Cellulolytic Enzymes Production via Solid-State Fermentation: Effect of Pretreatment Methods on Physicochemical Characteristics of Substrate

Figure 1

X-ray diffractograms. Gaussian smoothing followed by Voigt function was used to fit the diffractogram output of the instrument. (a) Native soybean hulls. (b) Steam-pretreated soybean hulls. (c) HCl-pretreated soybean hulls. (d) H₂SO₄-pretreated soybean hulls. (e) NaOH-pretreated soybean hulls. Planes corresponding to 2θ are 101 plane (~15°), 101 (~17°), 021 plane (~20°), 002 plane (~22°), and 040 plane (~34°). (Adapted from [41]).

(a)

(b)

(c)

(d)

(e)