FIELD: dairy industry. SUBSTANCE: milk ultrafiltrate is precipitated by saturated solution of ammonium sulfate preferably at 3-5 C, centrifuged at speed at least 12000 rpm during 0.5 to 1.5 h, and, for 10-12 h, subjected to double dialysis preferably at 7-9 C against water and sodium phosphate buffer followed by sorption of proteins and elution of protein fraction with optical density more than 0.1 at wavelength using Sephadex G-75 as sorbent. EFFECT: enhanced efficiency of isolation of anigiogenin-rich protein fraction and reduced expenses. 6 cl, 3 ex
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