Bioactive polymers 66. Theophylline retardation in xanthan-based hydrogels.
Polytechnic Institute of Jassy, Romania.
- Published Article
- Publication Date
Nov 01, 1991
Xanthan has been reticulated with epichlorohydrin to obtain a hydrogel for use in drug retardation. The obtained gel shows swelling degrees up to 1000. Theophylline has been inserted by diffusion into this gel; concentrations around 150 mg theophylline/g dry hydrogel being obtained. Controlled release of theophylline has been established by elution in a close recirculation system. Zero-order kinetics has been obtained in the diffusion process of theophylline into the eluent, within a 14 h time interval.
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