Freeze dried oldenlandia powder for injection and its preparation method
A technology for Hedyotis diffusa and freeze-dried powder injection, which are applied in the fields of pharmaceutical preparations and their preparation, freeze-dried powder for injection and their preparation fields, can solve the problems of complex preparation process and preparation technology, and achieve the solution of transportation and storage problems and curative effect. Precise, pain-relieving effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0045] Embodiment 1 Preparation of drug freeze-dried powder injection of the present invention
[0046] 1. Main ingredients
[0047] Hedyotis diffusa extract 28mg (containing 2mg total flavonoids)
[0048] It can be prepared by the following method
[0049] Take 1000g of washed and dried Hedyotis diffusa, grind it into 30 mesh coarse powder, use 2000ml of 80% ethanol as solvent, heat and reflux for extraction 4 times, each time for 1.5h. Combine the extracts, refrigerate for 10 hours, centrifuge, collect the supernatant, add it to the polyamide resin column, adjust the flow rate to 3ml / min, wash away impurities with distilled water, desorb with 80% ethanol as the mobile phase, reclaim the ethanol, and use Adjust the pH value to 3 with 50% sulfuric acid solution, let it stand for 10 hours, filter, adjust the pH value of the filtrate to neutral with 40% NaOH solution, add 2000ml of 80% ethanol, refrigerate for 10 hours, filter, and concentrate the filtrate under reduced pressu...
Embodiment 2
[0064] Embodiment 2 The preparation of drug freeze-dried powder injection of the present invention
[0065] 1. Main ingredients
[0066] Hedyotis diffusa extract 56mg (containing 4mg total flavonoids)
[0067] It can be prepared by the following method
[0068] Take 1000g of washed and dried Hedyotis diffusa, grind it into 30 mesh coarse powder, use 2000ml of 80% ethanol as solvent, heat and reflux for extraction 4 times, each time for 1.5h. Combine the extracts, refrigerate for 10 hours, centrifuge, collect the supernatant, add it to the polyamide resin column, adjust the flow rate to 3ml / min, wash away impurities with distilled water, desorb with 80% ethanol as the mobile phase, reclaim the ethanol, and use Adjust the pH value to 3 with 50% sulfuric acid solution, let it stand for 10 hours, filter, adjust the pH value of the filtrate to neutral with 40% NaOH solution, add 2000ml of 80% ethanol, refrigerate for 10 hours, filter, and concentrate the filtrate under reduced pr...
Embodiment 3
[0082] Embodiment 3 The preparation of drug freeze-dried powder injection of the present invention
[0083] 1. Main ingredients
[0084] Hedyotis diffusa extract 20mg (containing 1mg total flavonoids)
[0085] Its preparation can adopt following method:
[0086]Take 1000g of washed and dried Hedyotis diffusa, grind it into 40 mesh coarse powder, use 2000ml of 70% ethanol as solvent, heat and reflux for extraction three times, each time for 1h. Combine the extracts, refrigerate for 8 hours, centrifuge, collect the supernatant, add it to the polyamide resin column, adjust the flow rate to 4ml / min, wash away impurities with distilled water, use 70% ethanol as the mobile phase for desorption, reclaim the ethanol, and use Adjust the pH value to 4 with 40% sulfuric acid solution, let it stand for 8 hours, filter, adjust the pH value of the filtrate to neutral with 30% NaOH solution, add 1000ml of 70% ethanol, refrigerate for 8 hours, filter, and concentrate the filtrate under redu...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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