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 extract is concentrated and subjected to ultrafiltration. Ultrafiltration is carried out using coarse-pored cellulose acetate membranes UAM-500P. The obtained concentrate is treated with aqueous solution of a cationic flocculant. The clarified concentrated is treated with aqueous hydrogen peroxide solution in amount of 0.1-0.5 mol/l concentrate in the presence of a complexing agent in amount of 0.12-5.0 mmol/l. The ready product is extracted by spray drying.
EFFECT: invention enables to obtain highly pure arabinogalactan, increases efficiency of the process by changing the sequence of process steps and reduces consumption of reactants.
4 ex
| Title | Year | Author | Number |
|---|---|---|---|
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