Materials and methods
Gum tragacanth (Merck) was used as backbone. Lipase (MP
Biomedia) was used as an initiator. Glutaraldehyde, acrylic acid,
acrylamide and urea (MERCK) were used as crosslinker, monomers
and fertilizer, respectively.
FTIR spectra of backbone and hydrogel were recorded on Perkin
Elmer Spectrophotometer using KBr pellets. Scanning Electron
Micrographs (SEMs) of the backbone and hydrogel were taken on
LEO-435VF (LEO Electron Microscopy Ltd.). Weighing was done on
electronic balance (LIBROR AEG-220, Shimadzu).