CORN-STEEP EXTRACT PURIFICATION AND CONCENTRATING METHOD Russian patent published in 2014 - IPC C08B30/10 C08B30/02 

FIELD: food industry.

SUBSTANCE: corn-steep extract purification and concentrating method envisages stages of fine purification, sterilisation, preliminary concentrating and additional concentrating. The extract purification is performed through membranes with 0.2 and 0.45 mcm pore diameter or coarse-pored ultrafiltration membranes with rating in terms of molecular weight equal to 150-170 kDa. Deep concentrating till dry substances concentration equal to 25-30% is performed through highly selective reverse osmosis membranes with selectiveness equal to 99.5-99.8% under a pressure up to 100 MPa. The final concentrating till dry substance content equal to 55-65% is performed in a vacuum-evaporator installation.

EFFECT: corn-steep purification and concentrating method characterisation is as follows: high degree of chemical and microbiological purity and low production costs.

2 tbl, 1 dwg