Environment friendly method for producing diosgenin

A technology of diosgenin and diosgenin, which is applied in the field of diosgenin production by the environmental protection method, can solve the problems of unqualified melting point of saponin, low yield, environmental pollution, etc., achieve low impurity content, short production cycle, and low equipment requirements. high effect

Inactive Publication Date: 2009-04-08
HUNAN KEYUAN BIO PRODS
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is reported that this method needs 150 tons of turmeric for every ton of saponin produced, consumes 20 tons of hydrochloric acid, produces more than 500 tons of high-concentration wastewater, its COD is as high as 30000mg / L (BOD8000mg / L), and the pH value is 1.0-2.5. The yam soap obtained The element contains more impurities, the melting point of saponin is unqualified, the yield is low (2%), and the by-products contain a large amount of acid water and sugar waste water to be discharged, causing serious environmental pollution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Environment friendly method for producing diosgenin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Get turmeric dry raw material 1Kg (containing about 2% diosgenin), pulverize, cross 60 mesh sieves, extract three times with 5 times, 5 times, 4 times of volume (based on the quality of raw materials) 80% industrial methanol respectively, extraction time 3h, 2h, 2h respectively. Filtration, the filter residue is used for fermentation to produce alcohol raw materials and synthetic methyl cellulose raw materials, and the combined filtrate is concentrated into an extract. Put the extract into a pressurized hydrolysis tank, add 750ml of 1.25mol / L dilute sulfuric acid, and hydrolyze for 4 hours at 130°C under a pressure of 0.4Mpa. Filter, wash the filter residue with water until neutral, and dry to obtain 50 g of dry hydrolyzate, containing about 40-50% diosgenin. The dried hydrolyzate was extracted twice with 70% methanol to remove impurities, filtered, the filtrate was discarded, and dried to obtain a filter residue. Soxhlet extraction with 120# gasoline for 4 hours, the...

Embodiment 2

[0026] Get fresh turmeric raw material 1Kg (moisture content is about 70%), pulverize, extract three times with 4 times, 3 times, 3 times volume (based on the quality of raw material) 95% industrial methanol respectively, extraction time is respectively 3h, 2h, 2h. Filtration, the filter residue is used for fermentation to produce alcohol raw materials and synthetic methyl cellulose raw materials, and the combined filtrate is concentrated into an extract. Put the extract into an atmospheric pressure hydrolysis tank, add 300ml of 5mol / L dilute hydrochloric acid, and hydrolyze for 8 hours at 100°C. Filter, wash the filter residue with water until neutral, and dry to obtain 14 g of dry hydrolyzate, containing about 40-45% diosgenin. The dried hydrolyzate was extracted twice with 70% methanol to remove impurities, filtered, the filtrate was discarded, and dried to obtain a filter residue. Reflux extraction with 120# gasoline for 3 times, the extracts were combined and concentrate...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
Login to view more

Abstract

The invention provides a method for preparing diosgenin with an environmentally friendly method. At first, raw materials are prepared; then, alcohol-water mixed solution is used for extraction and filtration, and filter residue is used for being fermented to produce alcohol and composing methylcellulose raw materials, a filtrate is condensed to obtain dry extract; and hydrolysis in an acid water is carried out to the extract so as to obtain a solid residue, water washing is carried out till the residue is neutral, and drying is carried out to obtain a hydrolysate. Low-polarity alcohol-water mixed solution reflux is used for removing impurities from the hydrolysate; and finally, gasoline or 120# is used for carrying out extraction, and condensation is carried out to obtain diosgenin with high purity. The method has simple technological process, is liable to industrialization, has no high requirement to equipment, and can obtain the product with a quality melting point of over 195 DEG C; in addition, a large amount of fiber and starch in the raw material, yellow ginger, is effectively separated, which on one side makes good comprehensive use of yellow ginger source and on the other side solves the problems in the emission of large amount of acid water and waste water in the traditional method, thereby economically and effectively solving the problem of environmental protection and basically realizing production without waste.

Description

technical field [0001] The invention relates to the field of biochemical technology, in particular to an environment-friendly method for producing diosgenin. Background technique [0002] Dioscin, known as the "Mother of Hormones", is the basic raw material for the synthesis of various steroidal drugs such as anti-inflammatory hormones, progesterone, and sex hormones. , the plant contains a large amount of cellulose (accounting for 35-40%) and starch (accounting for 45-50%), water-soluble substances account for 10%, and saponin content only accounts for 1-2.5%. At present, pre-fermentation-acid hydrolysis and acid hydrolysis are commonly used to extract diosgenin. A common idea of ​​this traditional method is to firstly hydrolyze dioscin in turmeric under high temperature, high pressure, and high acid environment to obtain dioscin-containing soap. Diosgenin (10-15%) hydrolyzate, and then extracted to obtain diosgenin. It is reported that this method needs 150 tons of turme...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C07J71/00
Inventor 刘志强
Owner HUNAN KEYUAN BIO PRODS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap