Lignocellulose usually consists of cellulose, hemicellulose and
lignin. Cellulose and hemicellulose can be changed to sugars by biological
and chemical conversion, and the sugars can be fermented
to ethanol or other valuable chemicals [7]. However, lignin is an
inhibitor of the enzyme reaction, as it not only prevents cellulase
from forming cellulose but also adsorbs enzyme, making it inactive
for cellulose hydrolysis