FIELD: biotechnologies.
SUBSTANCE: invention relates to medicine, food industry and cosmetics, particularly, to natural dyes and biomarkers. This method comprises separation of red alga biomass from culture medium and its flushing. Cell walls are destructed and pigment is subjected to water extraction. Final product is conserved while biomass is extracted at the growth linear stage or under quasi continuous culture mode. Besides, is includes separation of said biomass from culture medium, flushing of cell biomembranes and water extraction.
EFFECT: simplified process, lower costs, high quality of finished products.
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