Rutin extraction method

An extraction method and rutin technology, applied in the field of rutin extraction, can solve the problems of low yield, complex process, and difficult source of raw materials, and achieve the effects of high product yield, short process time, and low toxicity of the production process

Inactive Publication Date: 2007-12-05
TIANJIN HANGU DISTRICT FUXIANG FERTILIZER PROCESSING FACTORY
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0002] At present, most of my country extracts rutin from flower buds of woody leguminous plant Sop

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0006] Example: a method for extracting rutin, the tartary buckwheat is washed, pulverized into a length of 2-3mm, dried to a moisture content of 6%, and then tartary buckwheat: solvent = 1: 6 weight ratio with methanol at 65 Stirring at ℃ for 24 hours and extracting, filtering to remove fiber residues, and recovering methanol by distillation to obtain a rutin extract containing impurities such as tannins, proteins, and pigments. Isopropyl alcohol is dissolved at room temperature, filtered after 20 minutes of precipitation, and impurities such as protein and some tannins and pigments are removed, and isopropyl alcohol is recovered to obtain the rutin extract containing impurities such as tannins and pigments; The weight ratio of solvent=1:6 was extracted with chloroform at 65°C for 2 hours, filtered, and impurities such as tannins and pigments were removed to obtain crude rutin, chloroform was recovered, and above-mentioned crude rutin was pressed by buckwheat: solvent = 1:5 w...

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Abstract

The process of extracting rutin includes the following steps: washing tartary buckwheat, crushing, stoving, extracting with methanol, filtering to eliminate fiber residue, distilling to recover methanol to obtain coarse extract; dissolving the coarse extract in isopropanol, depositing and filtering to eliminate impurity, recovering isopropanol to obtain extract; extracting the extract with trichloromethane, filtering to eliminate impurity to obtain coarse rutin product while recovering trichloromethane; dissolving coarse rutin product in mixed solvent of alcohol and ethyl acetate, filtering to obtain pure filtrate; adsorbing the filtrate, washing in column, concentrating the eluted liquid to recover alcohol, centrifugally filtering and stoving to obtain rutin product. The process has the advantages of facile materials, no environmental pollution and useability of the dregs as feed or fertilizer.

Description

technical field [0001] The invention relates to a method for extracting rutin. Background technique [0002] At present, rutin is mostly extracted from flower buds of the woody leguminous plant Sophora japonica in our country, but the source of raw materials is difficult, the process is complicated, and the yield is low. Contents of the invention [0003] The object of the present invention is to overcome above-mentioned defective, a kind of rutin extraction method is provided. [0004] The technical scheme of the present invention is: a kind of rutin extraction method, tartary buckwheat is pulverized, dries, then according to the weight ratio of tartary buckwheat:solvent=1:6-25 at 65-80 ℃, stir and extract 4-24 with methanol hour, filter to remove the fiber residue, and the filtrate is distilled to reclaim the solvent to obtain the rutin crude extract; the above-mentioned rutin crude extract is dissolved with isopropanol at normal temperature according to the weight rati...

Claims

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Application Information

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IPC IPC(8): C07H17/07
Inventor 杜云福
Owner TIANJIN HANGU DISTRICT FUXIANG FERTILIZER PROCESSING FACTORY
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