FIELD: dairy industry. SUBSTANCE: invention elates to preparing lactulose showing bifidogenous properties. Method involves preparing lactose solution, simultaneous isomerization and demineralization on anionite-exchange resins, crystallization and isolation of lactose crystals. Using high-base resin AB-17-8 чc treatment of 5-20% lactose solutions is carried out at 20-50 C at ratio solid and liquid phases = (1:3)-(1:10). Method eliminates the stage of alkaline catalysts addition, separate stage of demineralization and purification from by-side dyestuffs. EFFECT: ecological and economical effectiveness of method. 2 cl, 1 dwg, 2 ex
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Authors
Dates
1999-08-27—Published
1998-07-06—Filed