Method for clean production of saponin from Dioscorea zingiberensis C. H. Wright

Abstract

The invention discloses a method for clean production of saponin from Dioscorea zingiberensis C. H. Wright. The method comprises the following steps of crushing a dry raw material of Dioscorea zingiberensis C. H. Wright, sieving the powder of Dioscorea zingiberensis C. H. Wright by a sieve of 20 meshes, carrying out methanol or ethanol extraction, carrying out concentration recovery of methanol or ethanol from the extract until an alcohol smell does not exist, putting the extract treated by the previous step into a container, carrying out microbial constant-temperature fermentation, adding hydrochloric acid or sulfuric acid into the container for acid hydrolysis, filtering to obtain crude saponin, carrying out crystallization and recrystallization of the crude saponin by petroleum ether, and carrying out vacuum drying to obtain a finished product. The method for clean production of saponin from Dioscorea zingiberensis C. H. Wright has the advantages of high yield, good color and good quality of saponin, and no pollution.

Description

technical field [0001] The invention relates to a method for cleaning and producing saponin with turmeric. Background technique [0002] At present, most diosgenin manufacturers in my country adopt the direct acid hydrolysis process to produce diosgenin initiated by Rothrok, but the direct acid hydrolysis method can only extract about 1 / 4 of diosgenin. Despite decades of development, due to the small scale and lack of funds of most saponin production enterprises, the traditional process of "natural fermentation-acidolysis-extraction of saponin" is still used to produce saponin. Although this traditional production process is relatively simple to operate , easy to produce, but there are many problems: in the hydrolysis process of turmeric acid, due to the interference of starch and cellulose, saponin cannot be fully hydrolyzed, thereby causing the extraction rate of saponin to be greatly reduced; when carrying out gasoline solvent extraction, resulting in oil solubility Impu...

AI Technical Summary

Problems solved by technology

Despite decades of development, due to the small scale and lack of funds of most saponin production enterprises, the traditional process of "natural fermentation-acidolysis-extraction of saponin" is still used to produce saponin. Although this traditional production process is relatively simple to operate , easy to produce, but there are many problems: in the hydrolysis process of turmeric acid, due to the interference of starch and cellulose, saponin cannot be fully hydrolyzed, thereby causing the extraction rate of saponin to be greatly reduced; when carrying out gasoline solvent extraction, resulting in oil solubility Impurities enter the product, causing the saponin product to have a low melting point and tend to turn yellow during storage, and more colloidal mother liquor will be produced; the hydrolysis of starch and cellulose will greatly increase the amount of acid used in the production process and the organic content of wastewater, resulting in Environmental pollution, increased difficulty in wastewater treatment, and turmeric resources are also greatly wasted, with high cost and low yield. At the same time, acid hydrolysis brings a large amount of sewage, which has a great impact on the environment