Preparation and characterization of amidated pectin based hydrogels for drug delivery system

J Mater Sci Mater Med. 2008 Jun;19(6):2275-80. doi: 10.1007/s10856-007-3310-4. Epub 2007 Dec 6.

Abstract

In the current studies attempts were made to prepare hydrogels by chemical modification of pectin with ethanolamine (EA) in different proportions. Chemically modified pectin products were crosslinked with glutaraldehyde reagent for preparing hydrogels. The hydrogels were characterized by Fourier transform infrared spectroscopy (FTIR), organic elemental analysis, X-ray diffraction studies (XRD), swelling studies, biocompatibility and hemocompatibility studies. Mechanical properties of the prepared hydrogels were evaluated by tensile test. The hydrogels were loaded with salicylic acid (used as a model drug) and drug release studies were done in a modified Franz's diffusion cell. FTIR spectroscopy indicated the presence of primary and secondary amide absorption bands. XRD studies indicated increase in crystallinity in the hydrogels as compared to unmodified pectin. The degree of amidation (DA) and molar and mass reaction yields (YM and YN) was calculated based on the results of organic elemental analysis. The hydrogels showed good water holding properties and were found to be compatible with B-16 melanoma cells & human blood.

MeSH terms

  • Amides
  • Animals
  • Biocompatible Materials / chemistry
  • Blood / metabolism
  • Drug Delivery Systems*
  • Humans
  • Hydrogel, Polyethylene Glycol Dimethacrylate / chemistry*
  • Kinetics
  • Melanoma, Experimental
  • Mice
  • Pectins / chemistry*
  • Spectroscopy, Fourier Transform Infrared / methods
  • Tetrazolium Salts / chemistry
  • Thiazoles / chemistry
  • Wound Healing
  • X-Ray Diffraction

Substances

  • Amides
  • Biocompatible Materials
  • Tetrazolium Salts
  • Thiazoles
  • Hydrogel, Polyethylene Glycol Dimethacrylate
  • Pectins
  • thiazolyl blue