Process of extracting shikimic acid from aniseed

Abstract

The present invention is membrane separation process of extracting shikimic acid from aniseed, and the process includes the steps of extraction of shikimic acid, separation and purification. Specifically, shikimic acid is extracted with aniseed material and water as solvent and through micro filtering, ultrafiltering, nanofiltering, crystallizing and re-crystallizing in acetone. The present invention has the features of high extracting rate, no waste water draining, short production period, low cost, etc.

Description

technical field

[0001] The invention relates to a physical separation method, in particular to a method for extracting and separating shikimic acid from star anise. Background technique

[0002] The molecular formula of shikimic acid is C 7 h 10 o 5 , the relative molecular weight is 174.15, the scientific name is 3,4,5-trihydroxy-1-cyclohexene-1-carboxylic acid, it is white fine powder, slightly gas, bitter acid, soluble in water, insoluble in chloroform, benzene And petroleum ether, the melting point is 185°C, and the optical rotation is -180°. There are three hydroxyl groups, one carboxyl group, and one double bond in the molecular structure of shikimic acid, and it has chiral isomers. It can form esters or salts. Shikimic acid is an intermediate in the synthesis of biological and metabolic compounds, and it is also a raw material for the synthesis of many alkaloids, aromatic amino acids and indole derivatives, and chiral drugs (such as antiviral drugs). Shikimic ac...