Lignocellulose is comprised of sugar polymer components (i.e.,cellulose and hemicellulose) and non-sugar component (i.e., lignin), which are intertwined in a complex manner. Generally, the polysaccharides of cellulose and hemicellulose are eventually hydrolyzed into monomers and subsequently converted into biofuels. To ensure as high biofuel yield as possible in particular from agricultural residues that contain a large amount of hemicellulose, therefore, it is important to utilize not only glucose from cellulose but also xylose from hemicellulose.