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

Method for improving vinblastine content in madagascar periwinkle

A technology of vinblastine and vinblastine, which is applied in the field of increasing the content of vinblastine in vinca, can solve the problems of difficult industrial production by chemical synthesis methods, and achieve the effects of easy industrial production, easy operation, and good natural activity

Inactive Publication Date: 2008-10-29
NORTHEAST FORESTRY UNIVERSITY +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vinca contains nearly a hundred kinds of alkaloids, most of which are active, among them, vinblastine sulfate, but because the content of vinblastine in vinca is extremely low, it is difficult to realize industrial production by chemical synthesis methods. Therefore, finding high-content vinblastine Raw materials for the production of vinca alkaloids are crucial

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Divide 10kg of freshly collected periwinkle flowers with a water content of 70-80% into 4 equal parts, place them in a beater, add 10kg of culture solution dissolved with an inducer, refine the pulp for 3 minutes, and the final particle size of the material is 0.02-8μm . Then pour it into a culture tank with a filter membrane, use negative pressure 0.06-0.1MPa suction or positive pressure 0.1-0.6MPa air intake to carry out homogenate culture every 2h, and each culture time is 10min. After culturing for 24 hours, the content of vinca alkaloids in the raw materials was determined by HPLC. The results showed that the content of vinblastine in the raw materials increased by 55%, and the content of vincristine increased by 65%.

[0021] In this example, the formula of culture solution is as follows:

[0022] (1) The culture medium is pure water;

[0023] (2) The formula of the inducer is:

[0024] Sodium acetate 0.02μmol / L

[0025] Ethephon 1mg / L

[0026] Abscisic acid ...

Embodiment 2

[0036] Divide 50 kg of periwinkle flowers with a water content of 60% for 3 days after collection into 10 equal parts, place them in a beater respectively, add 15 kg of culture solution dissolved with an inducer, and refine the pulp for 5 minutes. The final particle size of the material is 0.02- 10 μm. Then pour it into a culture tank with a filter membrane, and use a negative pressure of 0.06-0.1 MPa to inhale or a positive pressure of 0.1-0.6 MPa to inhale for homogenate culture every 1 hour, and each culture time is 15 minutes. After culturing for 36 hours, the content of vinca alkaloids in the raw materials was measured by HPLC. The results showed that the content of vinblastine in the raw materials increased by 48%, and the content of vincristine increased by 53%.

[0037] In this example, the formula of culture solution is as follows:

[0038] (1) Standard B5 culture medium;

[0039] (2) The formula of the inducer is:

[0040] Shikimic acid 0.05μmol / L

[0041] Split ...

Embodiment 3

[0053] Divide 50 kg of periwinkle flowers with a water content of 43% for 5 days after collection into 10 equal parts, place them in a beater, add 20 kg of culture solution dissolved with an inducer, and refine the pulp for 5 minutes. The final particle size of the material is 0.02- 10 μm. Then pour it into a culture tank with a filter membrane, use negative pressure 0.06-0.1MPa suction or positive pressure 0.1-0.6MPa air intake to carry out homogenate culture every 1h, and each culture time is 20min. After culturing for 48 hours, the content of vinca alkaloids in the raw materials was measured by HPLC. The results showed that the content of vinblastine in the raw materials increased by 38%, and the content of vincristine increased by 42%.

[0054] In this example, the formula of culture solution is as follows:

[0055] (1) pH=5.8 phosphate buffer solution;

[0056] (2) The formula of the inducer is:

[0057] Shikimic acid 0.05μmol / L

[0058] Split loganin 0.04μmol / L

[0...

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 of increasing the desacetyl vinblastine content in Vinca rosea, removing foreign matter from fresh Vinca rosea, feeding into culture solution and inducer for fresh homogenate culture for 24-60 hours, the desacetyl vinblastine content in Vinca rosea in the culture solution and solid material is increased by 45-70% through HPLC detection and the leurocristine content is also increased. The method is characterized by the short producing period, easy-to-operate process and suitable for industrial production.

Description

Technical field: [0001] The invention relates to a method for increasing the content of vinblastine in periwinkle. Background technique: [0002] Vinblastine (VLB), also known as vinblastine, and its sulfate, vinblastine sulfate, are national essential medicines, mainly used for the treatment of Hodgkin's disease and choriocarcinoma. At present, vinblastine flower alkaloids are generally extracted from Catharanthus roseus, a plant of the family Apocynaceae. Vinca contains nearly a hundred kinds of alkaloids, most of which are active, among them, vinblastine sulfate, but because the content of vinblastine in vinca is extremely low, it is difficult to realize industrial production by chemical synthesis methods, therefore, it is difficult to find high-content vinblastine The raw materials for the production of vinca alkaloids are very important. [0003] The Patent Office of the State Intellectual Property Office of the People's Republic of China published on March 12, 2003 "...

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): C07D519/04A01H4/00
Inventor 祖元刚罗猛牟璠松唐中华赵修华祖柏实张琳田浩付玉杰张宝友
Owner NORTHEAST FORESTRY 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