Ultrasonic extraction method for salvianolic acid B
An extraction method and ultrasonic technology are applied in the extraction of salvianolic acid B, and the ultrasonic extraction field of salvianolic acid B can solve the problems of low extraction yield and low extraction efficiency, achieve simple process and avoid low extraction yield. , the effect of short extraction time
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0023] Weigh 100g of Danshen dry medicinal powder with 10 meshes, load it into a 2000ml flask, seal it with a plastic film, add 500ml of 40% ethanol, and extract for 10min at 50°C under ultrasonic waves with a frequency of 30kHz. After the extraction is completed, the crude extract is filtered, and the solvent is recovered to dryness under reduced pressure (control the concentration temperature not to exceed 40° C.) to obtain the crude extract. Then it was dissolved in cold water at 4°C, filtered to the solution, concentrated under reduced pressure to a volume of 10ml, acidified with 10% hydrochloric acid to pH2, and extracted with ethyl acetate 3-8 times. Combine the extracts and evaporate the ethyl acetate to obtain 6.6 g of salvianolic acid B with a purity greater than 40%.
Embodiment 2
[0025] Weigh 100g of dried Danshen medicinal powder of 30 meshes, load it into a 2000ml flask, seal it with a plastic film, add 1000ml of 50% ethanol, and extract for 20min at 20°C under ultrasonic waves with a frequency of 40kHz. After the extraction is completed, the crude extract is filtered, and the solvent is recovered to dryness under reduced pressure (control the concentration temperature not to exceed 40° C.) to obtain the crude extract. Then dissolve in cold water at 4°C, filter and transfer the solution, concentrate under reduced pressure to a volume of 20ml, acidify with 10% hydrochloric acid to pH 3, and take 3-8 times with n-butanol. Combine the extracts and volatilize n-butanol to obtain 6.6 g of salvianolic acid B with a purity greater than 40%.
Embodiment 3
[0027] Weigh 100g of dried Danshen medicinal powder with 50 meshes, load it into a 5000ml flask, seal it with plastic film, add 1500ml of 60% ethanol, and extract 25min at 30°C under ultrasound frequency of 50kHz. After the extraction is completed, the crude extract is filtered, and the solvent is recovered to dryness under reduced pressure (control the concentration temperature not to exceed 40° C.) to obtain the crude extract. Then dissolve in cold water at 4°C, filter the solution, concentrate under reduced pressure to a volume of 30ml, acidify to pH 4 with 10% hydrochloric acid, and extract 3-8 times with ethyl acetate. Combine the extracts and evaporate the ethyl acetate to obtain 6.6 g of salvianolic acid B with a purity greater than 40%.
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