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Transport Properties of Ibuprofen Encapsulated in Cyclodextrin Nanosponge Hydrogels: A Proton HR-MAS NMR Spectroscopy Study
Published on: August 15, 2016
Controlled microwave processing applied to the pharmaceutical formulation of ibuprofen
Laura J Waters1, Susan Bedford, Gareth M B Parkes
1School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, UK. l.waters@hud.ac.uk
AAPS Pharmscitech
|August 16, 2011
Summary
Controlled microwave processing for pharmaceutical formulations was successfully developed. This method, using precise temperature control, offers new possibilities for heat-sensitive drug formulations.
Area of Science:
- Pharmaceutical Science
- Materials Science
- Chemical Engineering
Background:
- Microwave processing offers potential advantages for pharmaceutical formulation due to rapid and volumetric heating.
- Conventional heating methods can be slow and may lead to thermal degradation of sensitive compounds.
- Precise temperature control has been a limitation for applying microwave energy to pharmaceutical formulations.
Purpose of the Study:
- To develop and demonstrate controlled microwave processing for pharmaceutical formulations.
- To investigate the impact of microwave heating versus conventional heating on drug-excipient mixtures.
- To evaluate the influence of water presence on the formulation process and product characteristics.
Main Methods:
- Modification of a microwave oven with direct temperature measurement and pulse-width modulation power control for precise temperature regulation.
- Formulation of ibuprofen (model drug) with stearic acid and polyvinylpyrrolidone (excipients).
- Comparative analysis of microwave and conventional heating methods.
- Assessment of formulation properties using differential scanning calorimetry and dissolution studies.
Main Results:
- Successful development of controlled microwave processing for pharmaceutical formulations.
- Microwave and conventional heating yielded similar ibuprofen-stearic acid formulations.
- Differences in dissolution kinetics were observed for ibuprofen-polyvinylpyrrolidone formulations processed by microwave versus conventional heating.
- The presence of water did not significantly affect the formulation process or outcomes.
Conclusions:
- Controlled microwave heating is a viable technique for pharmaceutical formulation, especially for heat-sensitive materials.
- This technology enables precise temperature management, overcoming previous limitations of microwave processing.
- Further applications of controlled microwave heating can be explored for various pharmaceutical ingredients and formulations.
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