Abstract
The use of carbohydrate polymers in pharmaceutical formulations as drug delivery carriers has gained significant interest from many perspectives. As an exudate of the Albizia tree, Albizia procera (Mimosaceae), a carbohydrate polymer, is used as an excipient to develop sustained-release drug delivery systems, owing to its biocompatibility and biodegradability. This study was conducted to investigate the influence of carboxymethylation of A. procera gum on rheological properties and drug release from the matrix tablet formulations. The study also revealed the comparative characterization of the native form of A. procera (NAP) as well as the carboxymethylated A. procera (CMAP). The rheological assessments of both polymers under different pH divulged the flow behavior, linear viscoelasticity (LVE), structural deformation, and gel network formation. The drug release from NAP and CMAP matrices of various formulations were evaluated and established correlations with rheology.
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