Bioethanol, a substitute for gasoline, can be made from sugar,
starch and lignocellulosic feedstocks. Bioethanol made from
starch or sugar requires high quality land for crop growth,
which therefore increases pressure on land to meet requirements
for both food and fuel in the future [1]. Current
bioethanol research focuses on lignocellulosic feedstocks;
especially in relation to reducing the cost and increasing the
efficiency of the key steps in the lignocellulose-to-bioethanol
process (e.g. lignocellulosic pre-treatment, enzymatic hydrolysis
and fermentation) [2]