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High-efficiency extraction and cleaning production process for diosgenin

A technology of diosgenin and production process is applied in the field of efficient extraction of diosgenin and clean production technology, can solve the problems of low extraction efficiency, high production cost, environmental pollution and the like, and achieves the effect of high extraction efficiency

Inactive Publication Date: 2012-09-12
四川省荣桓科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The present invention aims to solve the technical problems of low extraction efficiency, high production cost, difficulty in dehydration and concentration, and serious environmental pollution in the traditional diosgenin production method, so as to provide a diosgenin with the advantages of high extraction efficiency, low production cost, and no environmental pollution. Efficient extraction and clean production process of diosgenin

Method used

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  • High-efficiency extraction and cleaning production process for diosgenin
  • High-efficiency extraction and cleaning production process for diosgenin
  • High-efficiency extraction and cleaning production process for diosgenin

Examples

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Embodiment 1

[0038] Take 100kg of dry yam (containing about 2% diosgenin), crush it, pass it through a 10-mesh sieve, and use methanol solvent for ultrasonic continuous countercurrent extraction at a frequency of 25 Hz. The filter residue is used as bio-organic fertilizer, and the filtrate is concentrated. Put the concentrated solution into a pressurized hydrolysis tank, add hydrochloric acid to make the concentration 2mol / L, and perform enzymatic hydrolysis at 90°C for 5 hours. Filtration, drying, continuous countercurrent extraction with 120# gasoline of 8 times the liquid volume of the enzymatic hydrolyzate, cooling and crystallization of the extract after concentration, suction filtration, and drying to obtain 99.25% pure diosgenin with a melting point above 195.5°C.

Embodiment 2

[0040] Take 200kg of dry yam (containing about 2% diosgenin), crush it, pass through a 20-mesh sieve, and use ethanol solvent ultrasonic continuous countercurrent extraction at a frequency of 35Hz. The filter residue is used as bio-organic fertilizer, and the filtrate is concentrated. Put the concentrated solution into an atmospheric pressure hydrolysis tank, add hydrochloric acid to make the concentration 2mol / L, and hydrolyze at 90°C for 5 hours. Filter and adjust the pH of the hydrolyzate to neutral. The neutralized hydrolyzate was continuously extracted with 5 times the amount of liquid 120# gasoline, the extract was concentrated to a small volume, cooled and crystallized, suction filtered, and dried to obtain 98.5% pure diosgenin with a melting point of 195°C above.

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Abstract

The invention relates to a high-efficiency extraction and cleaning production process for diosgenin, relates to the technical field of chemical industry and aims to solve the technical problems of low extraction efficiency, high production cost, difficulty in dehydration and concentration, serious pollution to environment and the like in the convention method for producing the diosgenin. The process comprises the following steps of: a) pretreating raw materials, namely crushing dioscorea zingiberensis; b) extracting dioscin, namely performing ultrasonic continuous countercurrent extraction on the crushed raw materials by using an alcohol water solvent, filtering to obtain filter residues and filtrate, and concentrating the filtrate to obtain a dioscin extract; c) performing enzymolysis or acid hydrolysis on the dioscin, namely performing the enzymolysis or the acid hydrolysis on the obtained dioscin extract; and d) extracting by using an organic solvent, namely performing countercurrent extraction on the obtained zymolyte or acid hydrolysate by using No.120 gasoline or No.6 gasoline, concentrating extract liquor, cooling for crystallizing, performing suction filtration and drying to obtain pure diosgenin.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a high-efficiency extraction and clean production process of diosgenin. [0002] Background technique [0003] Diosgenin (also known as diosgenin), its traditional process adopts: natural fermentation - acid hydrolysis - extraction of saponin. The production process of saponin is to use yam as raw material, after soaking, crushing, natural fermentation, inorganic acid hydrolysis, rinsing and filtration, the filtrate is dried, and the saponin in the filtrate is extracted with 120# gasoline as the extractant, evaporated and concentrated In the extract, the saponin crystallizes out. [0004] There are many problems in this traditional production process: [0005] 1. Dioscorea contains not only diosgenin, but also 40% starch and 50% cellulose. During the hydrolysis process of yam, due to the interference of starch and cellulose, saponin cannot be fully hydrolyzed and rel...

Claims

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Application Information

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IPC IPC(8): C07J71/00C12P33/20
Inventor 孙波邓云包塔娜李树明
Owner 四川省荣桓科技有限责任公司
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