Journal article
Effect of drug load and lipid-wax blends on drug release and stability from spray-congealed microparticles
Pharmaceutical development and technology, Vol.27(10), pp.1069-1082
11/30/2022
DOI: 10.1080/10837450.2022.2152048
PMID: 36124550
Abstract
This study was designed to evaluate paraffin wax as a potential controlled release matrix for spray congealing and its impact on drug release and stability of the microparticles. Paraffin wax can form a hydrophobic barrier to moisture and reduce drug degradation besides retarding drug release in the gastrointestinal tract. More hydrophilic lipid-based additives can be incorporated to modulate the drug release through the paraffin wax barrier. This study reports the findings of lipid-wax formulations at preserving the stability of moisture-sensitive drugs in spray-congealed microparticles. Aspirin-loaded microparticles formulated with different drug loads, lipid additives, and lipid:wax ratios were produced by spray congealing. Stearic acid (SA), cetyl alcohol (CA), and cetyl ester (CE) were the lipid additives studied. The microparticles were evaluated for yield, encapsulation efficiency, particle size, drug stability, and release. CE exhibited the greatest effect on increasing drug release, followed by CA and SA. Dissolution profiles showed the best fit to Weibull kinetic model. The degree of drug degradation was low, with CA imparting the least protective effect, followed by SA and CE. Paraffin wax is useful for preserving the stability of moisture-sensitive aspirin and retarding its release from spray-congealed microparticles. The addition of lipid additives modulated drug release without compromising drug stability.
Details
- Title: Subtitle
- Effect of drug load and lipid-wax blends on drug release and stability from spray-congealed microparticles
- Creators
- Hongyi Ouyang - National University of SingaporeSoon Jun Ang - National University of SingaporeZong Yang Lee - National University of SingaporeTze Ning Hiew - National University of SingaporePaul Wan Sia Heng - National University of SingaporeLai Wah Chan - National University of Singapore
- Resource Type
- Journal article
- Publication Details
- Pharmaceutical development and technology, Vol.27(10), pp.1069-1082
- Publisher
- Taylor & Francis
- DOI
- 10.1080/10837450.2022.2152048
- PMID
- 36124550
- ISSN
- 1083-7450
- eISSN
- 1097-9867
- Number of pages
- 14
- Grant note
- GEA-NUS PPRL fund
- Language
- English
- Date published
- 11/30/2022
- Academic Unit
- Pharmaceutical Sciences and Experimental Therapeutics
- Record Identifier
- 9984365889602771
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