ISOLATION AND PURIFICATION OF STEROLS FROM NEUTRALS FRACTION OF TALL OIL PITCH BY SINGLE DECANTATION PRECIPITATION

摘要

Sterols from the neutrals fraction of tall oil pitch are disclosed to be isolated and purified by a process of a liquid-liquid extraction where the hydrocarbon extraction stream is washed with an aqueous methanol solution to remove methanol-soluble impurities. After the hydrocarbon and aqueous phases are separated, water is added to the hydrocarbon phase to facilitate crystallization of sterols.