After enzymatic hydrolysis, the structure of the untreated
material was practically not modified (Fig. 2B) confirming the
low hydrolysis efficiency obtained. Hydrolyzed cellulignin picture
(Fig. 2D) shows that a major destruction of the fibers
occurred in this case when compared with the hydrolyzed fibers
from untreated material, justifying the better performance of
the hydrolysis from cellulignin than from untreated sample.
Hydrolyzed fibers from BSG cellulose pulp were completely
destroyed (Fig. 2F), explaining the high glucose yield and cellulose
conversion ratio values attained from this substrate. Note
that in this case, the cellulose fibers became both narrower
and shorter, denoting both longitudinal and lateral attack of the
fibers.