METHOD OF CONCENTRATING BASIC AMINO ACIDS THROUGH ELECTRODIALYSIS Russian patent published in 2011 - IPC B01D61/44 

FIELD: chemistry.

SUBSTANCE: invention can be used in food and pharmaceutical industry, as well as in analysis of amino acids, as a preconcentration method. The method of concentrating basic amino acids through electrodialysis involves feeding an initial solution containing basic amino acid in low concentration into dilution sections of an electrodialysis apparatus with alternating cation-exchange and bipolar membranes between electrodes, characterised by high transfer number, with pH of the initial solution equal to pH of the corresponding basic amino acid, where the formed amino acid cations are transferred through the cation-exchange membranes into concentration chambers. The process is realised in periodic mode if the concentration chambers are non-flow type, otherwise the process is realised in continuous mode.

EFFECT: design of an efficient method for purifying and producing basic amino acids, particularly for producing arginine, lysine and histidine from low-concentration solutions.

5 cl, 4 ex, 5 tbl, 1 dwg