(-)-epigallocatechin gallate-calcium complex solid dispersion and its prepn and application
A technology of solid dispersion and complex, applied in the field of pharmaceutical compositions, can solve the problems of unsatisfactory curative effect of osteoporosis, and achieve the effects of significant curative effect, enhanced pharmacological action, and improved water solubility.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0018] The preparation of embodiment 1 EGCG-calcium complex solid dispersion
[0019] EGCG, with a purity of 99.6%, was provided by the Laboratory of Traditional Chinese Medicine and Marine Medicine, School of Pharmacy, Sun Yat-sen University. Polyvinylpyrrolidone PVP k30 (referred to as PVP), imported and repackaged, provided by Guangzhou Chemical Reagent Wholesale Department.
[0020] Dissolve 10 g of EGCG in 20 ml of deionized water, add saturated CaCl dropwise 2 Solution, stirring while adding dropwise, nitrogen protection, until the precipitation is complete, centrifuge at 5000rpm for 5min, collect the precipitate, resuspend with 200ml deionized water, centrifuge at 5000rpm for 5min, collect the precipitate, then suspend with 200ml deionized water, centrifuge at 5000rpm 5min (repeated 3 times), 6.9 grams of EGCG-Ca was obtained. 6.9 grams of EGCG-Ca and 40 grams of PVP were mixed and dissolved in 300 ml of water, protected by nitrogen, homogenized by a high-pressure hom...
Embodiment 2
[0021] The preparation of embodiment 2 EGCG-calcium complex solid dispersion
[0022] EGCG, with a purity of 99.6%, was provided by the Laboratory of Traditional Chinese Medicine and Marine Medicine, School of Pharmacy, Sun Yat-sen University. Polyvinylpyrrolidone PVP k30 (referred to as PVP), imported and repackaged, provided by Guangzhou Chemical Reagent Wholesale Department.
[0023] Dissolve 10 g of EGCG in 20 ml of deionized water, add saturated CaCl dropwise 2 Solution, while stirring while adding dropwise, until the precipitation is complete, centrifuge at 5000rpm for 5min, collect the precipitate, re-suspend with 200ml deionized water, centrifuge at 5000rpm for 5min, collect the precipitate, then suspend with 200ml deionized water, and centrifuge at 5000rpm for 5min (repeat 3 times), to get 6.9 grams of EGCG-Ca. 6.9 g of EGCG-Ca and 95 g of PVP were mixed and dissolved in 600 ml of water, protected by nitrogen, homogenized by a high-pressure homogenizer, filtered, an...
Embodiment 3
[0024] Embodiment 3 Preparation of EGCG-calcium complex solid dispersion
[0025] EGCG, with a purity of 99.6%, was provided by the Laboratory of Traditional Chinese Medicine and Marine Medicine, School of Pharmacy, Sun Yat-sen University. Polyvinylpyrrolidone PVP k30 (referred to as PVP), imported and repackaged, provided by Guangzhou Chemical Reagent Wholesale Department.
[0026] Dissolve 10 grams of EGCG in 20ml of deionized water, add saturated calcium acetate solution dropwise, stir while adding, and protect with nitrogen until the precipitation is complete, centrifuge at 5000rpm for 5min, collect the precipitate, resuspend with 200ml of deionized water, and centrifuge at 5000rpm After 5 minutes, the precipitate was collected, suspended in 200 ml of deionized water, and centrifuged at 5000 rpm for 5 minutes (repeat 3 times) to obtain 7.2 grams of EGCG-Ca. 7.2 grams of EGCG-Ca and 180 grams of PVP were mixed and dissolved in 2000 ml of water, protected by nitrogen, homog...
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