FIELD: biotechnology. SUBSTANCE: minced chicken crests are extracted twofold with aqueous solution of n-propyl, iso-propyl or tert.-butyl alcohol (5-25 vol. % ) at liquid modulus 1:(10-15). Extracts are combined, sodium chloride is added up to separation of system into layers. Aqueous layer is separated, and hyaluronic acid is precipitated from its. EFFECT: improved method of preparing. 1 tbl
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