METHOD OF PRODUCING ARABINOGALACTAN Russian patent published in 2012 - IPC C08B37/00 

FIELD: chemistry.

SUBSTANCE: invention relates to methods of producing arabinogalactan. The method involves aqueous extraction of arabinogalactan from resin-free larchwood while heating. The obtained arabinogalactan extract is purified from high-molecular weight impurities by ultra filtration on hydrophobic membranes with pore size 0.03; 0.05; 0.08 mcm. Further, the extract is concentrated and purified from low-molecular weight impurities on a hydrophilic ultra filtration membrane. The extract then undergoes diafiltration with demineralised water on the same membrane. The end product is extracted via spray drying.

EFFECT: invention enables to obtain arabinogalactan with high degree of purity of up to 96,5-98,0%, cut duration of the purification process and reduce power consumption.

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