Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for extracting Chinese yam saponin from turmeric

A technology of diosgenin and turmeric, applied in chemical instruments and methods, preparation of steroids, steroidal compounds, etc., can solve the problems of limiting the effective extraction and application of diosgenin, hidden dangers of food safety and production safety, cumbersome process operations, etc. , to achieve the effect of easy operation, avoiding the danger of flammability and explosion, and improving the extraction efficiency

Inactive Publication Date: 2009-06-03
PEKING UNIV +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above several types of processes all use organic solvents such as petroleum ether or gasoline to extract diosgenin, all of which have the following shortcomings, which largely limit the effective extraction and application of diosgenin
(1) The extraction is carried out under normal pressure, so the efficiency is low; in order to maximize the extraction efficiency, it is necessary to adopt a circular extraction method, which makes the process operation cumbersome and greatly prolongs the production cycle
(2) A large amount of organic solvents have caused pressure and hidden dangers in terms of storage and production safety to manufacturers
(3) Residues of organic solvents have brought food safety problems
At present, there are a few reports on supercritical extraction of saponin, but most of them use other Dioscorea genus plants (Chuanshanlong, Huangyam, etc.) as raw materials to extract saponin. Purification to achieve ideal product quality
Therefore, still exist above-mentioned food safety and production safety hidden trouble problem

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
  • Method for extracting Chinese yam saponin from turmeric
  • Method for extracting Chinese yam saponin from turmeric
  • Method for extracting Chinese yam saponin from turmeric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]Take by weighing turmeric acid hydrolyzed dried product (self-made, be about to turmeric raw material is separated cellulose through the grinding with water, remove starch by enzymatic method, and obtain after drying after fermentation acid hydrolysis; wherein saponin content is 13.9%.) 2kg, Put into the extraction kettle, add entraining agent (80% ethanol by volume fraction), start to heat the extraction kettle and the separation kettle after sealing, open the carbon dioxide steel cylinder at the same time to let the carbon dioxide enter the storage tank, when the temperature of the extraction kettle and the separation kettle reaches 50°C, At 55°C, open the valve entering the extraction kettle to allow carbon dioxide gas to enter the extraction kettle through the mixer and purifier; open the high-pressure pump to pressurize the extraction kettle. When the extraction pressure reaches 15Mpa, close the valve entering the extraction kettle for static extraction. Then open t...

Embodiment 2

[0029] The same raw materials and operation as in Example 1, the entraining agent all adopts ethanol with a volume fraction of 90%, and 2 kg of turmeric acid hydrolyzed dry matter is fed. The conditions for extracting pigments and other substances are the same as before; when extracting diosgenin, the temperature of the extraction kettle and the separation kettle are 63°C and 45°C respectively, and the pressure of the extraction kettle is 25MPa. After 3 hours of extraction, the main Contains diosgenin extract. The extract was centrifuged or filtered to obtain 302 g of diosgenin product with a purity of 96.5%, mp 210.81° C., and a product yield of 15.1%, meeting the standards for saponin products.

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

No PUM Login to View More

Abstract

A method which extract yam saponin, using supercritical fluid extraction method and carbon dioxide as extraction solvent; firstly, separating pigment of turmeric acid hydrolytic dry matter via 0. 5-2h static extraction of carbon dioxide and 2-6h circulating extraction in the condition of 15-40Mpa extraction pressure, 30-50deg C extraction temperature, 4-8MPa analytical pressure and 35-55deg C analytical temperature; then in the condition of 15-40MPa extraction pressure, 30-70deg C extraction temperature, 4-8MPa analytical pressure and 35-55deg C analytical temperature, getting yam saponin product via 0. 5-2h static extraction of carbon dioxide and 2-6h circulating extraction, centrifuging or filtration; Finally, recovering ethanol; at the same time of extraction, adding ethanol entrainer in circulatory system. The advantages of this invention are the production circle is short, the operation is simple, the separation is easy, no pollution, avoiding inflammability and flammability of organic solvent, the productivity and the purity of product is high.

Description

technical field [0001] The invention belongs to a method for extracting substances from natural plants, in particular to a method for extracting cyclopentane from turmeric (D.zingiberensis, also known as Dioscorea scutellaria) and (a) a steroid fused with a hydrogenated phenanthrene skeleton and a heterocyclic ring family compound-diosgenin method. Background technique [0002] Diosgenin (Diosgenin) is also known as diosgenin, and its chemical name is Δ, 3-hydroxyl, 25R-spirosterene. Its structural formula is shown in figure 1 . It was first isolated from Dioscorea tokoro Makino by Japanese scholars in the 1930s. Existing studies have reported that this compound has hemolytic, blood lipid-lowering, antibacterial, anti-inflammatory, anti-tumor effects, etc. It is an important pharmaceutical and chemical raw material for the synthesis of steroid hormone drugs and steroidal contraceptives, and can be further processed. There are more than 300 varieties of hormones, sex hormo...

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 Patents(China)
IPC IPC(8): C07J71/00C07J75/00
CPCY02P20/54
Inventor 黄文欧阳琦张歆倪晋仁
Owner PEKING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com