Out of tested extraction agents good results were obtained in extraction of beech wood with
green liquor. In extraction with green liquor pH decreases to the near neutral region and the
rate of wood components dissolution is high. However, xylose yield is about by half lower when
compared with hot water extraction. The advantages of green liquor extraction is absence of
significant degradation of polysaccharides in the extracted wood and availability of green liquor
from the recovery cycle of a kraft pulp mill.