Studies on encapsulation of Rifampicin and its release from chitosan-dextran sulfate capsules

M. Geetha Devi, Susmita Dutta, Ashraf Talib Al Hinai, S. Feroz

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Biodegradable capsules of size around 350 nm were prepared by layer-by-layer (L-b-L) assembly of oppositely charged chitosan and dextran sulfate on silica particles and the subsequent removal of template. The resulting capsules were loaded with rifampicin, an anti-tuberculosis drug under modest conditions, as demonstrated by scanning electron microscopy (SEM). Maximum encapsulation of rifampicin was found to be about 82 μg at 25 °C and pH of 3. Release studies were done in-vitro mode by semiautomatic release protocol, with different pH solutions in water and phosphate buffered saline (PBS). The microcapsules exhibited a slow and sustained release over 72 hours and maximum release was obtained at a pH of 1.2 in water and a pH of 7.4 in PBS. The size of silica particle was analyzed by dynamic light scattering method. Scanning electron microscopy (SEM) measurements showed the surface morphology of the hollow capsules. UV spectroscopy was employed to monitor the drug release processes in both solutions. The kinetics of drug release mechanism was studied using Ritger-Peppas and Higuchi models.

Original languageEnglish
Pages (from-to)118-124
Number of pages7
JournalKorean Journal of Chemical Engineering
Volume32
Issue number1
DOIs
Publication statusPublished - 2014

Fingerprint

Dextran Sulfate
Dextran
Chitosan
Rifampin
Encapsulation
Capsules
Phosphates
Silica
Scanning electron microscopy
Dynamic light scattering
Ultraviolet spectroscopy
Silicon Dioxide
Surface morphology
Water
Pharmaceutical Preparations
Kinetics
Sulfates

Keywords

  • Biodegradable Capsules
  • Chitosan
  • Dextran Sulfate
  • Drug Release
  • Encapsulation
  • Microcapsules
  • Rifampicin

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Studies on encapsulation of Rifampicin and its release from chitosan-dextran sulfate capsules. / Devi, M. Geetha; Dutta, Susmita; Al Hinai, Ashraf Talib; Feroz, S.

In: Korean Journal of Chemical Engineering, Vol. 32, No. 1, 2014, p. 118-124.

Research output: Contribution to journalArticle

Devi, M. Geetha ; Dutta, Susmita ; Al Hinai, Ashraf Talib ; Feroz, S. / Studies on encapsulation of Rifampicin and its release from chitosan-dextran sulfate capsules. In: Korean Journal of Chemical Engineering. 2014 ; Vol. 32, No. 1. pp. 118-124.
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