Dry Chitosan Salts and Complexes of Aliphatic Carboxylic Acids
Chitosan is the major outlet for chitinous products, largely because of its utility in the treatment of a broad range of potable and waste water systems for purification, clarification and solids concentration. Its safety and efficacy in reducing biological oxygen demand (BOD) are especially valuable. Currently, the practical use of chitosan requires the transport and storage of the formic or acetic acid solubilizing component and some expertise in control of solution preparation. These limitations might be avoided in many instances if dry, free-flowing carboxylic acid salts of chitosan were available. They could then simply be dissolved in water for their application.
KeywordsEthyl Filtration Acetone Lactate Hydroxide
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- 1.G. W. Rigby, Deacetylated Chitin and Processes for Same, U.S. 2, 040,879 and U.S. 2,040,880 ( 1936 ); R. A. A. Muzzarelli, “Chitin,” Pergamon Press, London (1977).Google Scholar
- 2.E. R. Hayes, D. H. Davies and V. G. Munroe, Organic solvent systems for chitosan, in: “Proceedings of the First International Conference on Chitin/Chitosan,” R. A. A. Muzzarelli and E. R. Pariser, eds., M.I,T, Sea Grant Report MITSG 78 - 7, Cambridge (1978).Google Scholar
- 3.P. Gross, E. Konrad and H. Mager, Chitosan as a natural film forming ingredient, in: “Chitin and Chitosan, Proceedings of the Second International Conference on Chitin and Chitosan,” S. Hirano and S. Tokura, eds., The Japanese Society of Chitin and Chitosan (1982), Tottori, Japan.Google Scholar
- 4.E. R. Hayes, Characterization of chitosan, in: “Proceedings of the First International Conference on Chitin/Chitosan,” R. A. A. Muzzarelli and E. R. Pariser, eds, M.I.T. Sea Grant Report MITSG 78 - 7, Cambridge (1978).Google Scholar
- 5.M. Sugano, T. Fujikawa, Y. Hiratsuji, K. Fukuda and Y. Hasegawa, A novel use of chitosan as a hypocholesterolemic agent in rats, Am. J. Clin. Nut. 33: 787 (1980).Google Scholar
- 6.M. E. Cupery, Sulfamic Acid Salts of Polymeric Amino Compounds, U.S. 2, 201, 762 (1940).Google Scholar
- 8.P. R. Austin, Chitin solvents and solubility parameters, in: “Chitin, Chitosan and Related Enzymes,” J. P. Zikakis, ed., Academic Press, New York (1984).Google Scholar
- 9.P. R. Austin, Dry Free-Flowing Water-Soluble Complexes of Chitosan, U.S. Patent Application, Serial No. 703, 070 (1985).Google Scholar
- 10.W. D. Wilson and R. L. Jones, Intercalation in biological systems,in: “Intercalation Chemistry,” M. S. Whittingham and A. J. Jacobsen, eds., Academic Press, New York (1982).Google Scholar
- 12.J. Blackwell and M. A. Weih, The structure of chitin-protein complexes, in: “Chitin, Chitosan and Related Enzymes,” J. P. Zikakis, ed., Academic Press, New York (1984).Google Scholar
- 13.P. R. Austin, Chitin Complexes with Alcohols and Carbonyl Compounds, U.S. 4,063,016 (1977); F. A. Rutherford, III and P. R. Austin, “Chitin Solvents, Complexes and Physical Properties,” Delaware Sea Grant Technical Report DEL-13–78 (1978).Google Scholar
- 14.P. R. Austin, Renatured Chitosan and Process of Making Same, U.S. 4, 309, 534 (1982).Google Scholar