4. Conclusion
Modification of gelatin by addingk-carrageenan leads to significant changes in the gelation kinetics and properties of formed gels.
Application of gelatin/k-carrageenan mixtures results in systematic increase in the gelation rate, values of viscoelastic parameters, strength of gels, and growth of the melting temperature. The
combined using of gelatin andk-carrageenan creates a synergetic
effect on the physico-chemical properties of modified gels. Changes
in the rheological properties occur by the exponential law. Actually,
it means that the significant change in properties is reached at the
definite gelatin/carrageenan ratio and in increase in the gelatin
concentration the larger share of carrageenan is needed.
The observed impact of addition ofk-carrageenan on the gel
properties is explained by formation of complexes of gelatin and
polysaccharide that was confirmed by FT-IR spectral studied. Besides addition of even minor quantity ofk-carrageenan significantly changes the supramolecular structure of gelatin gels.