Recently scholars in home and abroad advance that the separation of hemicellulose of raw material prior to chemical pulping,would facilitate a more effective hemicellulose utilization. The high-temperature extraction method.which is able to effectively extract the hemicellulose without destrorying the cellulose of raw material, causing no significant impact on the pulp is used to separate the hemicellulose. The major components of hemicellulose is pentose, including xylose, arabinose, etc., which ca...