SU94246A1 - Method for removing cholesterol from wool fat by saponifying it - Google Patents

Description

Known methods for saponification of wool fat for the separation of cholesterol from it are difficult to do under production conditions.

The method according to the invention makes it possible to separate cholesterol from wool fat in a simpler way and to obtain it in a sufficiently pure form.

According to the proposed method, wool fat is dissolved in any organic solvent, for example dichloroethane, light gasoline, acetone, and so on. The fat in the solution is subjected to deep saponification with alkali, for example, sodium.

The washed part is separated by filtration, centrifugation or another similar method. Soaps are used for their intended purpose, i.e. they are useful waste.

The neat part, located w; and c in a solvent, is treated with metal salts, for example, manganese, calcium, iron, chromium. The precipitate, cholesterol complex compounds with metal salts, are separated by filtration, centrifuged or decanted and washed with the same solvent.

The filtrate is evaporated. The remainder, containing some unrecoverable cholesterol and other parts of unwashed wool fat, is used separately.

The complex compound of cholesterol with metal salts is decomposed by adding water to the solvent. Cholesterol is precipitated, after which it is recrystallized and dried.

When cholesterol is extracted from wool wash water, wool fat is first precipitated with metal salts. The precipitate is then treated with a soda gel, a tree, after which the unsaturated portion is extracted with a solvent. Further, the neat portion is processed as described above.