Fig. 6

Effect of pretreatments in NMR crystallinity indexes. a MultiCP spectra amplified in the 80–94 ppm region, with the respective Gaussians/Lorentzians deconvolutions [14] for untreated bagasse and bagasse pretreated with 1% H2SO4 and with 1% H2SO4 + 4% NaOH; b CI values of sugarcane bagasse after each pretreatment step obtained according to the three procedures indicated.