NaOH pretreatment resulted in the swelling of the corncob particles
subsequently there is a possibility to remove of the lignin and
the hemi cellulose. Fibers were depolymerized due to the separation
of hydrogen bonds of cellulose. The swelling of the substrate
particles was due to the saponification of inter molecular ester
bonds (Potumarthi et al., 2013b). NaOH treatment released a low
amount of sugars compared to H2SO4 (Parveen et al., 2009;
Potumarthi et al., 2012) pretreatment and increase in concentration