METHOD OF PREPARING OF XYLITE-SORBITOL SYRUP Russian patent published in 1995 - IPC

FIELD: pharmaceutical industry. SUBSTANCE: product: xylite-sorbitol syrup. Reagent 1: vegetable pentosan-containing raw. Reagent 2: diluted sulfuric acid. Reaction conditions: at 130-150 C following by neutralization with milk of lime, purification by charcoal - collactivite, evaporation, purification on ionites КУ-1 and АУ-1. Reagent 3: hydrogen. Reaction conditions: on catalyst Ni-Ti-Al following by purification on ionites КУ-1 and АУ-1, separation of crystalline xylitol and purification or residual polyol backflow on anionite АВ-17-2П (time contact with anionite is 1-3.5 h) at loading with 1-2 t dry matter of polyol backflow per 1 t dry anionite per 1 h. EFFECT: improved method of product preparing. 1 tbl