FIELD: chemistry.
SUBSTANCE: invention relates to a method for purification of phycocyanines resistant to acidic pH values. pH of a primary extract of phycocyanines resistant to acidic pH values from cells of microorganisms producing phycocyanines is brought to pH of less than 5 to precipitate organic substances other than phycocyanines resistant to acidic pH values. Supernatant containing phycocyanines resistant to acidic pH values is collected. Phycocyanines are isolated. The microorganism producing phycocyanines is selected from microalgae of Cyanidioschyzon, Cyanidium, or Galdieria genus.
EFFECT: production of purified phycocyanines resistant to acidic pH values with a controlled composition of phycocyanines and a purity index of at least 1.20 is provided.
7 cl, 7 dwg, 3 ex
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