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

Method for preparing epipodophyllotoxin diglucoside and special strain used thereby

A technology of epipodophyllotoxin and diglucoside, which is applied in the field of preparation of epipodophyllotoxin diglucoside, which can solve the problems of wild podophyllophyllous plants with complex growth environment, difficult to simulate, long growth cycle, etc., and achieve the protection of ecological diversity of plants The effect of high reliability, strong operability and short production cycle

Inactive Publication Date: 2009-12-16
BEIJING NORMAL UNIVERSITY
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The growth environment of wild podophyllum plants is complex, difficult to simulate, and the growth cycle is long, so it is difficult to carry out large-scale artificial cultivation, and tissue culture technology is not suitable for podophyllum plants; the chemical structure of podophyllotoxins is complex, and chemical synthesis Although it can be carried out, the cost is too high; genetic engineering means to construct engineered bacteria cannot be carried out due to the large number of enzymes involved in the formation of such substances.

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 preparing epipodophyllotoxin diglucoside and special strain used thereby
  • Method for preparing epipodophyllotoxin diglucoside and special strain used thereby
  • Method for preparing epipodophyllotoxin diglucoside and special strain used thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, isolation and identification of bacterial strain

[0025] 1. Separation

[0026] The roots and rhizomes of the fresh plant Sinopodophyllum hexandrum (Royle) Ying were collected from Dacaotan (2700m above sea level) in Zhang County, Gansu Province. Take the root and rhizome of the fresh plant Taoerqi, roughen the surface, and wash it with tap water. In the ultra-clean bench, treat with 75% ethanol for 5 minutes, rinse with sterile water for 3-5 times, then treat with 2.5% sodium hypochlorite for 10 minutes, and rinse with sterile water for 3-5 times. Use sterilized tweezers and razor blades to peel off the outer skin of the material, then cut into small pieces of 0.5cm×0.5cm and plant them on PDA solid medium, and cultivate them at 28°C for 3-7 days. At the same time, the same sterilized materials were not peeled and cut, rolled on the PDA medium for one week, cultured under the same conditions, and observed as a control.

[0027] After a few days of cul...

Embodiment 2

[0039] Embodiment 2, preparation epipodophyllotoxin diglucoside

[0040] 1. Culture strains

[0041] Put 100ml of prepared potato dextrose liquid culture medium in a 250ml Erlenmeyer flask, sterilize, pick mycelia or spores and inoculate in the Erlenmeyer flask, culture at 28°C and 120r / min on a shaker for 7 days to obtain a fermentation broth.

[0042] Potato dextrose liquid culture medium is prepared according to the following method: Weigh 200g of potatoes (peeled, cut into about 2cm 2 small pieces), boil in water for 30 minutes, then filter with double gauze, take the filtrate and add 20g of glucose, then make up water to 1000mL, natural pH.

[0043] The experiment was repeated 3 times.

[0044] Second, the extraction of the product:

[0045] Use a suction filter to filter the fermentation broth twice, collect mycelia and fermentation broth respectively; extract the fermentation broth with an equal volume of chloroform, and use TLC to detect the chloroform extract. The...

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

The invention discloses a method for preparing epipodophyllotoxin diglucoside and a special strain used thereby. The strain is aspergillus parasiticus TEQB with a preservation number of CGMCC No.3116. The strain of the invention can be used for preparing the epipodophyllotoxin diglucoside. The method for preparing the epipodophyllotoxin diglucoside in the invention has the advantages of simple operation, low cost, easy operation and short production period. The method of the invention provides a new way of preparing the epipodophyllotoxin diglucoside, avoids the limitations of other preparation methods in the prior art, has strong operability, is suitable for industrial large-scale production and has a great significant for the protection of the ecological diversity of plants at the same time.

Description

technical field [0001] The invention relates to a method for preparing epipodophyllotoxin diglucoside and a special bacterial strain thereof. Background technique [0002] Podophyllotoxin (podophyllotoxin) mainly exists in the Berberidaceae Podophyllum and its related plants. It is a class of natural compounds with a wide range of biological activities, including estrogen-like, anti-estrogen-like, anti-cancer, anti-viral , anti-fungal, sedative, inhibiting plant growth, anti-oxidation and other effects. In particular, it has strong anticancer activity, and its mechanism of action is to inhibit the depolymerization of tubulin to prevent cell division, and to inhibit the activity of DNA topoisomerase. Its glycoside derivatives etoposide and teniposide have low toxicity and have good curative effects on various tumor diseases such as small cell lung cancer and lymphoma, and have become a broad-spectrum anti-tumor drug in clinical application. [0003] At present, podophylloto...

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
IPC IPC(8): C12N1/14C12P19/60C12R1/66
Inventor 赵长琦贾栗朱妍妍艾嫦
Owner BEIJING NORMAL UNIVERSITY
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