METHOD FOR EXTRACTING HEMICELLULOSE FROM LIGNOCELLULOSIC MATERIAL

The present invention relates to a method for extracting hemicellulose from lignocellulosic material， the method comprising - providing (11) a quantity of lignocellulosic material comprising a first amount of hemicellulose， - determining (12) a desired amount of hemicellulose for extraction， wherein the desired amount of hemicellulose is determined (12) as a portion of the first amount of hemicellulose， - supplying (13) the lignocellulosic material to the treatment vessel， - performing (14) hydrolysis of the lignocellulosic material for extracting hemicellulose， and - supplying (15) a volume of displacement liquor， wherein the volume of displacement liquor is supplied until the desired amount of hemicellulose is displaced from the treatment vessel.