4-H-Celastrus angulatus original medicine and preparation method and quality detection method thereof
A quality detection method, the technology of picroderm, applied in the field of botanical pesticides
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0123] iv) Preparation of test solution
[0124] Accurately weigh 200 mg of 4-H-piculin or 4-H-piculin aqueous emulsion in a 100mL volumetric flask, add appropriate amount of methanol to dissolve, dilute to the mark after ultrasonic oscillation, and shake well to obtain 4- H-picterine original medicine or 4-H-pichortine water emulsion for testing solution.
[0125] v) Precision determination
[0126] The test solution was injected three times, the relative standard deviation of the peak area was RSD=1.66%, and the relative standard deviation of the retention time was RSD=0.35%.
[0127] vi) Determination of the test product
[0128] Draw each test solution, inject sample, measure its peak area, obtain Angulateoid C content.
[0129] vii) Determination of recovery rate
[0130] Using the standard addition method, 100 μg / mL was added to the test sample 1, the average recovery rate was 102.3%, and the RSD was 2.12%.
[0131] ②Angulateoid C absolute content calculation
[01...
Embodiment 1
[0251] (1) The preparation method of 4-H-picterine original drug A
[0252] Add 3:3:3 times the volume of petroleum ether to the Hubei Enshi (2010) bitter vine seeds (24 mesh) that meet the requirements after sieving, and reflux extraction at 80°C for 3 times, each time for 2 hours , filtered, combined three filtrates, and concentrated under reduced pressure to seed oil. Take this oil, pack it into a column (diameter-to-height ratio: 10:1) with 1 times its weight of HP20 resin, and successively wash the column with 40% ethanol, 60% ethanol, 80% ethanol and 95% ethanol (the The volume of ethanol was 40, 90, 40 and 20 times that of the filtrate after concentration), and the 60% ethanol eluate was collected and evaporated to dryness under reduced pressure to obtain the original drug A of 4-H-pichoretine.
[0253]
[0254] (2) Quality testing method of 4-H-picterine original drug A
[0255] ①Preparation of characteristic extracts
[0256] Take 4-H-picterine original drug A d...
Embodiment 2
[0269] (1) The preparation method of the original drug B of 4-H-piculin
[0270] After sieving, the seeds (24 mesh) of Phyllostachys chinensis (2011) that met the requirements were added to the ethanol with a volume of 3︰2︰2 times and a mass ratio of 95%, and reflux extraction at 60°C for 3 times. Extract each time for 1.5h, filter, combine three filtrates, and concentrate under reduced pressure to seed oil. Take the oil, pack it into a column (diameter-to-height ratio 10:1) with 1.2 times its weight of D-101 resin, and successively wash the column with 35% ethanol, 65% ethanol, 80% ethanol and 90% ethanol (punch column 40, 90, 40 and 20 times the volume of the ethanol after concentrating the filtrate respectively), collect the 65% ethanol eluate, and evaporate to dryness under reduced pressure to obtain the original drug B of 4-H-pichoretine.
[0271]
[0272] (2) 4-H-Pictericillin Technical B quality testing method
[0273] ①Preparation of characteristic extracts
[02...
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