Isolation and purification of sterols from neutrals fraction of

Details Isolation and purification of sterols from neutrals fraction of Isolation and purification of sterols from neutrals fraction of

1998-11-06

2000-05-02

Dees, Jose' G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Cyclopentanohydrophenanthrene ring system containing

C07J 900

Patent

active

060574623

ABSTRACT:
Sterols from the solvent-extracted or distilled neutrals of saponified 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 by adding the methanol and water, sequentially or as a blend. The resulting hydrocarbon
eutrals/methanol/water solution separates into an upper organic phase and a lower methanol/water phase, which lower phase is removed. The remaining organic phase is allowed to cool to from about 20-30.degree. C., with agitation, to facilitate crystallization of sterols, which crystals are recovered by filtering.

REFERENCES:
patent: 2573891 (1951-11-01), Christenson
patent: 3840570 (1974-10-01), Julian

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