Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1385102 | Carbohydrate Polymers | 2016 | 8 Pages |
Abstract
The interaction of cationic polysaccharide chitosan and gelatin accompanied by the stoichiometric (bio)polyelectrolyte complexes formation has been studied by the methods of capillary viscometry, UV and FTIR spectroscopy and dispersion of light scattering. Complexes were formed in the aqueous phase, with pH being less than the isoelectric point of gelatin (pIgel). The particle size of the disperse phase increases along with the growth of the relative viscosity in comparison with sols of the individual components-polysaccharide and gelatin. Possible models and mechanism of (bio)polyelectrolyte complexes formation have been discussed. It was shown that the complex formation takes place not only due to the hydrogen bonds, but also due to the electrostatic interactions between the positively charged amino-groups of chitosan and negatively charged amino acid residues (glutamic Glu and aspartic Asp acids) of gelatin.
Keywords
Arginine (PubChem CID: 6322)Sodium alginate (PubChem CID: 6850754)Lysine (Pubchem CID: 5962)Histidine (PubChem CID: 6274)Glutamic acid (PubChem CID: 611)Water (PubChem CID: 962)Sodium acetate (PubChem CID: 517045)Acetic acid (PubChem CID: 176)Absorption spectraViscosityPotassium bromide (PubChem CID: 253877)GelatinChitosan
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Nicolay G. Voron'ko, Svetlana R. Derkach, Yuliya A. Kuchina, Nina I. Sokolan,