Method for enriching and purifying betulin in birch barks

Abstract

The invention belongs to the field of natural organic chemistry and relates to a method for enriching and purifying betulin in birch barks by utilizing a batch distillation-macroporous absorption resin method. The method has the advantages of good adsorption selectivity to betulin, quickness of adsorption and resolution, larger adsorption capacity, convenience and quickness of extraction, rich raw material source, low production cost, obvious separation effect and high extraction purity, can be used for obtaining a semi-finished betulin product with a content higher than 35 percent and a finished betulin product with a content higher than 98 percent and overcomes the defects of relatively lower conventional extraction ratio and low extraction purity. In the invention, macroporous absorption resin having stable physical and chemical properties, larger surface area, higher exchange speed, higher mechanical strength, strong antipollution capacity and good heat stability is used, which can selectively adsorb the betulin from the solution through physical adsorption, thus the invention has the advantages of quickness of adsorption and resolution and larger adsorption capacity.

Description

A method for enriching and purifying betulin in birch bark Technical field: The invention belongs to the field of natural organic chemistry, and relates to a method for purifying betulin, in particular to a method for enriching and purifying betulin in birch bark by using a batch distillation-macroporous adsorption resin coupling method. Background technique: Birch bark, also known as white birch, birch, birch, powder birch, birch bark, comes from the soft bark of birch BetulaplatyphyllaSuk. The bark is peeled off in spring, or on trees that have been felled. Its chemical components are betulin, betulinic acid, betulin and so on. Betulin, also known as betulin, betulin, and betulin, is an acyclic triterpenoid compound that has anti-inflammatory, anti-viral, inhibiting protein dissolution in hair fibers, improving damaged hair luster, and promoting hair growth. It can be used in In food, cosmetics and pharmaceutical industries. In recent years, it has been found that th...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to overcome the shortcomings of conventional techniques such as relatively low extraction rate and low extraction purity, and provide a method for enriching and purifying betulin in birch bark using the coupling method of batch distillation-macroporous adsorption resin