Effect of ultraviolet light on the release of theophylline from ethylcellulose-based sustained-release microcapsules.

Abstract

Sustained-release theophylline microcapsules were prepared using the emulsion solvent-evaporation technique. Three viscosity grades of ethylcellulose and varying concentrations of theophylline were used for the formulation. The microcapsules were exposed to short-wave ultraviolet (UV) light for 7 days. The surface and the cross-section of microcapsules were… (More)

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Cite this paper

@article{Asker1997EffectOU, title={Effect of ultraviolet light on the release of theophylline from ethylcellulose-based sustained-release microcapsules.}, author={Ahmed F. Asker and Ahmed Ferdous}, journal={PDA journal of pharmaceutical science and technology}, year={1997}, volume={51 3}, pages={125-9} }