Method for comprehensively extracting dye lignin and kaempferol from sophora fruit

Abstract

The invention provides a method for comprehensively extracting dye lignin and kaempferol from sophora fruit. The technical concept is shown in the steps as follows: 1, crushing raw materials, hydrolyzing through acid water, and extracting acidolysis slag through an organic solvent; 2, combining an extracting liquid, and concentrating and filtering the extracting liquid to obtain precipitate which is a mixture of kaempferol and dye lignin; 3, extracting the obtained precipitate through alkaline liquid, and centrifugally separating to obtain the precipitate which is kaempferol and obtain the supernate which is dye lignin; 4, dissolving the obtained precipitate through the organic solvent, and adding an absorbent to be purified, and filtering, concentrating, and centrifugally separating to obtain faint yellow powder which is kaempferol; and 5, discoloring the supernate obtained in step 3 through the absorbent, and filtering, then adjusting the pH (Potential Of Hydrogen), standing and precipitating, and centrifugally separating to obtain the white powder which is the dye lignin. With the adoption of the method provided by the invention, the problem of the prior art that the resource is wasted because two products cannot be comprehensively developed can be overcome, the extracting step is optimized, the producing cost is reduced, and the operability is improved.

Description

technical field [0001] The invention belongs to the technical field of traditional Chinese medicine chemistry, and relates to a method for extracting genistein and kaempferol, in particular to a method for comprehensively extracting genistein and kaempferol from Sophora japonica raw materials. Background technique [0002] Sophora japonicus, also known as locust fruit, locust seed, locust bean, sky bean, locust bean, is the mature fruit of Sophora japonica L., a leguminous plant. Bitter in the mouth, cold in nature. Return liver, large intestine channel. Function: clearing away heat, moistening liver, cooling blood, stopping bleeding. Indications: Intestinal wind bleeding, hemorrhoids, metrorrhagia, bloody stranguria, bloody dysentery, dysphoria, dysphoria, dizziness, eczema and itching. [0003] Sophora japonicus is rich in flavonoids, among which genistein and kaempferol are one of the main active ingredients. Genistein is an isoflavone compound, also known as genistei...

AI Technical Summary

Problems solved by technology

The choice of column chromatography greatly restricts the recovery rate of active components of the product, and the production time is also indirectly delayed