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Producing xylan/Eudragit® S100-based microparticles by chemical and physico-mechanical approaches as carriers for 5-aminosalicylic acid.

Authors
  • Silva, Acarilia Eduardo
  • Oliveira, Elquio Eleamen
  • Gomes, Monique C Salgado
  • Marcelino, Henrique Rodrigues
  • Silva, Karen C Holanda
  • Souza, Bartolomeu Santos
  • Nagashima, Toshiyuki Jr
  • Ayala, Alejandro Pedro
  • Oliveira, Anselmo Gomes
  • do Egito, Eryvaldo Sócrates Tabosa
Type
Published Article
Journal
Journal of microencapsulation
Publication Date
Jan 01, 2013
Volume
30
Issue
8
Pages
787–795
Identifiers
DOI: 10.3109/02652048.2013.788087
PMID: 23631384
Source
Medline
License
Unknown

Abstract

Xylan is a biopolymer found in a variety of cell wall plants. Eudragit® S-100 (ES100), a pH-dependent polymer, is used as a coating material in gastroresistant delivery systems. In this study, microparticles based on both polymers were produced by interfacial cross-linking polymerisation and/or spray-drying technique in order to investigate feasibility and stability of the systems. Size and morphology of the microparticles were characterised by optical and SEM while FT-IR, thermal analysis (TG/DTA), and X-ray diffraction (XRD) evaluated the drug-polymer interactions and the thermal behaviour of the systems. FT-IR confirmed the absence of chemical interaction between the polymers. TG/DTA analysis showed a higher stability for spray-dried microparticles and XRD data proved the amorphous feature of both carriers. The results reveal that xylan/ES100 microparticles can be produced by chemical or physico-mechanical ways, the latter being the best option due to the lack of toxic cross-linking agents and easy scale-up.

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