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Quaternized Chitosan (QCS) Nanoparticles as a Novel Delivery System for Ammonium Glycyrrhizinate

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The aim of this study was to generate a new type of nanoparticles made of quaternized chitosan (QCS) and poly(aspartic acid) via the ionotropic gelation technique and to evaluate their potential for the association and delivery of ammonium glycyrrhizinate (GLA). The effects of the pH value of nanoparticles, QCS molecular weight (Mw) and poly(aspartic acid) concentration on GLA encapsulation were studied. Suitably pH value of nanoparticles, moderate QCS MW, optimal concentration ratio of poly(aspartic acid) and QCS favored higher GLA encapsulation efficiency. The release of GLA from nanoparticles was pH-dependent. Fast release occurred in 0.1 M phosphate buffer solution (PBS, pH = 7.4), while the release was slow in 0.1 M HCl (pH = 1.2). The results showed that the new QCS/poly(aspartic acid) nanoparticles have a promising potential in GLA delivery system.
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Document Type: Research Article

Publication date: 01 November 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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