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Updated: Jun 6, 2026

Preparation and Characterization of SDF-1α-Chitosan-Dextran Sulfate Nanoparticles
Published on: January 22, 2015
Preparation, characterization of hydrophilic and hydrophobic drug in combine loaded chitosan/cyclodextrin
Ji Jingou1, Hao Shilei, Liu Weiqi
1Faculty of Pharmacy, College of Chemistry and Chemical Engineering, University of Chongqing, Chongqing 400030, China. jingou.ji@yahoo.com.cn
Abstract:
The compound nanoparticles of chitosan (CS) and cyclodextrin (CD) loading with hydrophilic and hydrophobic drug simultaneously were prepared via the cross-linking method. Methotrexate (MTX) and calcium folinate (CaF) were selected as the model drugs. The prepared nanoparticles were characterized by FT-IR spectroscopy to confirm the cross-linking reaction between CS and cross-linking agent. X-ray diffraction (XRD) was performed to reveal the form of the drug after encapsulation. The average size of nanoparticles ranged from 308.4 ± 15.22 to 369.3 ± 30.01 nm. The nanoparticles formed were spherical in shape with high zeta potentials (higher than +30mV). In vitro release studies in phosphate buffer saline (pH 7.4) showed an initial burst effect and followed by a slow drug release. Cumulative release data were fitted to an empirical equation to compute diffusional exponent (n), which indicated the non-Fickian trend for drug release.
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