Fine purification method for sterol

Abstract

The invention relates to a refining method of high content natural plant sterol, the natural plant crude sterol with the weight percentage of 35 percent to 80 percent weight content is selected and added in petroleum ether or other mixed solvents for stirring and filtration, a solid phase I is selected, the solid phase I is added in the petroleum ether or other mixed solvents for evenly stirring and filtration, a solid phase II is taken and added in ethanol solution for heating and stirring, activated carbon is added, the heating temperature is 60 to 80 DEG C, the holding time is 0.5 to 2 hours, heat filtration is carried out, then slow stirring and slow cold separation crystallization are carried out, the solution is subject to constant temperature filtration after cold separation, and the filtrate is dried by constant temperature air blow to obtain refined plant sterol. The technique has short route, simple operation, wide processing range of the crude sterol, small energy consumption and low cost, yield and purity both achieve higher standards, thus providing a certain degree of protection for increasing the economic benefit of enterprises.

Description

technical field [0001] The invention relates to the field of sterol refining methods, in particular to a method for refining crude sterols. Background technique [0002] Natural phytosterols are natural active substances that exist in plants, widely distributed in nature, and are substances with physiological value. They are used in medicine, cosmetics, animal growth agents and their paper processing, printing, textile, food and other fields Has a wide range of uses. [0003] There are different methods for extracting phytosterols, but the principle is to use the differences in the chemical properties, physical properties and biochemical reactions of the raw materials. The first type of method uses saponification and extraction to obtain unsaponifiable matter to obtain sterols. This process is simple to operate, but the amount of solvent used is large, the recovery pressure is high, and the yield of sterols is not high; the second type of method uses the complexing properti...

AI Technical Summary

Problems solved by technology

The product obtained by this method has high precision, and the sterol content can reach 97.5%, but the operation process is too long, the yield is low, and the range of the raw material crude sterol to be processed is narrow, and the crude sterol with a sterol content of 50-55% can only be processed; The acetone solvent used is a state-monitored drug, and the relevant unit needs to issue a precursor drug purchase certificate before it can be purchased and used. It is important that acetone is used as a solvent, and the processing range of crude sterols is narrow, and only 50-55% of crude sterols can be processed. , if the sterol content is not within this range, the sterol content needs to be treated to this range before the sterol can be refined

At the same time, due to the volatility and flammability of acetone, the environment will inevitably be polluted to a certain extent during the entire refining process of sterols, and there are certain potential safety hazards