Optimization of Preparation Technology and Investigation of Release Mechanism of Sinomenine Hydrochloride- Polyvinyl Alcohol Microcapsules
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Optimization of Preparation Technology and Investigation of Release Mechanism of Sinomenine Hydrochloride- Polyvinyl Alcohol Microcapsules
Chinese Journal of Experimental Traditional Medical FormulaeVol. 18, Issue 24, Pages: 49-52(2012)
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Published:2012
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DOU Peng, ZHANG Hua, ZHANG Wen. Optimization of Preparation Technology and Investigation of Release Mechanism of Sinomenine Hydrochloride- Polyvinyl Alcohol Microcapsules[J]. Chinese journal of experimental traditional medical formulae, 2012, 18(24): 49-52.
DOI:
DOU Peng, ZHANG Hua, ZHANG Wen. Optimization of Preparation Technology and Investigation of Release Mechanism of Sinomenine Hydrochloride- Polyvinyl Alcohol Microcapsules[J]. Chinese journal of experimental traditional medical formulae, 2012, 18(24): 49-52.DOI:
Optimization of Preparation Technology and Investigation of Release Mechanism of Sinomenine Hydrochloride- Polyvinyl Alcohol Microcapsules
Objective:To optimization preparation technology of sinomenine hydrochloride-polyvinyl alcohol (SM-PVA) microcapsules
and investigate its characterization and in vitro release performance. Method: With drug loading as index
the amount of emulsifier
stirring speed
volume fraction of glutaraldehyde and dosage of cyclohexane(oil phase) were chosen as factor
SM-PVA microcapsules was prepared byW/O/W multiple emulsion interfacial polymerization method
preparation technology of SM-PVA microcapsules was optimized by orthogonal test;drug loading was determined by UV spectrophotometric
morphology of SM-PVA microcapsules was scanned by electron microscopy
particle size of SM-PVA microcapsules was charactered by particle size analysis instrument
and in vitro release performance was investigated. Result: Optimum preparation technology was:7% emulsifier
stirring speed 600 r·min-1
volume fraction of glutaraldehyde 10 mLand 25% cyclohexane
drug loading 6.23%;Average particle size of SM-PVA microcapsules 16 μm
it showed uniform dispersion and smooth surface of spherical.These prepared SM-PVA microcapsules showed good sustained release in simulated gastric and intestinal fluid. Conclusion: SM-PVA microcapsules could be a novel drug delivery system of sinomenine hydrochloride from Chinese materia medica.