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We hypothesized that pH-responsive carboxymethylated kappa-carrageenan microparticles could protect entrapped oral insulin from acidic and proteolytic degradation in the gastrointestinal tract. Therefore, the objectives of this study were to prepare and characterize insulin entrapped in lectin-functionalized carboxymethylated kappa-carrageenan microparticles and to evaluate their therapeutic efficacy...
The work presented herein discusses the carboxymethylation of kappa-carrageenan, a natural linear polysaccharide, to afford a pH-dependent swelling property allowing for intestinal-targeted delivery of bioactive macromolecules. The carboxymethylation conditions with respect to the volume and concentration of sodium hydroxide (V NaOH , C NaOH ), weight of monochloroacetic acid (W ...
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