Fractional extraction method of aloe polysaccharide

Abstract

This invention provides a fractional extraction method of aloe polysaccharides, it adds 8-10 times of 95% alcohol into concentrated aloe product, standing and precipitating after mixing, then filtering, reclaiming alcohol, collecting aloes crude polysaccharide, after adding water and mixing to dissolve, gradually passing the ultrafiltration membrane whose molecular cut off is 200000-4000, then passing nano-filter membrane to concentrate, getting aloes polysaccharides of different molecular weight.

Description

technical field

[0001] The invention relates to a plant extraction method, in particular to a method for fractionally extracting aloe polysaccharides from concentrated aloe products. Background technique

[0002] Aloe polysaccharide is an important raw material in medicine, chemical industry, and food. Aloe polysaccharides in different molecular weight ranges have different functions. Due to the low content of soluble solids in aloe, the content of aloe polysaccharides in soluble solids is also low, only about 10%, and after the aloe polysaccharides are graded and extracted, the content of each level is different, and the molecular weight distribution of aloe polysaccharides is wide , the physical and chemical properties are very similar, therefore, when the chemical method in the prior art is used to extract aloe polysaccharides fractionally, the structure and biological activity of the aloe polysaccharides are often destroyed due to heat or other chemical effects. It is d...