METHOD OF PRODUCING SUGAR SOLUTION Russian patent published in 2016 - IPC C13K1/04 

FIELD: food industry.

SUBSTANCE: invention relates to food industry. Method includes concentrating an aqueous cellulose-derived sugar solution with a nanofiltration membrane and/or reverse osmosis membrane, wherein said concentration is carried out after adding a water-soluble anionic polymer to said aqueous cellulose-derived sugar solution, to remove fermentation inhibitors into permeate side of said nanofiltration membrane and/or reverse osmosis membrane. Water-soluble anionic polymer contains a polymer selected from a group consisting of polymer phosphate salt, polymer phosphate, polycarboxylate polymer salt and a polycarboxylate polymer. Water-soluble anionic polymer is added to said aqueous cellulose-derived sugar solution in concentration of 0.5 mg/l to 500 mg/l. Average molecular weight of said water-soluble anionic polymer ranges from 200 to 10,000.

EFFECT: invention ensures production of sugar solution with low probability of content of fermentation inhibitors.

8 cl, 2 dwg, 26 tbl, 8 ex