期刊
CHEMISTRY OF NATURAL COMPOUNDS
卷 48, 期 3, 页码 353-357出版社
SPRINGER
DOI: 10.1007/s10600-012-0250-0
关键词
polyelectrolyte complexes; chitosan; carrageenan
资金
- RAS Presidium Basic Research Program Molecular and Cellular Biology
- SB-FEB [12-II-0-05-004]
The formation process of soluble chitosan (C)/kappa-carrageenan (K) complexes was studied. It was shown that soluble complexes were obtained preferentially by mixing the starting components at given ratios whereas soluble complexes were formed only over a narrow range of starting-component ratios by titration of K with C. The formation of C/K polyelectrolyte complexes was confirmed by gel-permeation chromatography and centrifugation in a Percoll gradient. The formation process of C/K complexes depended on the C molecular weight and the concentrations and ratios of starting polysaccharides. It was shown that unbound components in addition to the complex remained in the mixture upon mixing carrageenan with high-molecular-weight C (C-HM) in 1:1.5 and 1:30 ratios (mol/mol) whereas low-molecular-weight C (C-LM) was bonded completely to the polyanion.
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