Compositional heterogeneity of heterogeneously deacetylated chitosans

Carbohydrate Polymers

Volumn 29, Issue 1, 1996, Pages 17-24

  Ottøy, Mette H ^a   Vårum, Kjell M ^a   Smidsrød, Olav ^a  

^a NORWEGIAN UNIVERSITY OF SCIENCE AND TECHNOLOGY   (Norway)

Author keywords

[No Author keywords available]

Indexed keywords

ACETYLATION; CHEMICAL ANALYSIS; FRACTIONATION; MOLECULAR WEIGHT; MOLECULAR WEIGHT DISTRIBUTION; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; POLYMERIZATION; VISCOSITY;

ACID INSOLUBLE FRACTIONS; ACID SOLUBLE FRACTIONS; CHITOSANS; COMPOSITIONAL HETEROGENEITY; DEPOLYMERIZATION; DIAD FREQUENCIES; HETEROGENEOUS ALKALINE DEACETYLATION;

POLYSACCHARIDES;

EID: 0029714993     PISSN: 01448617     EISSN: None     Source Type: Journal    
DOI: 10.1016/0144-8617(95)00154-9     Document Type: Article

References (34)

1. Aiba, S. (1991). Studies on chitosan: 3. Evidence for the presence of random and block copolymer structures in partially N-acetylated chitosans. Int. J Biol. Macromol., 13, 40-44.
2. Anthonsen, M.W., Vårum, K.M. & Smidsrød, O. (1993). Solution properties of chitosans: conformation and chain stiffness of chitosans with different degrees of N-acetylation. Carbohydr. Poly., 22, 193-201.
3. Anthonsen, M.W., Vårum, K.M., Hermansson, A.M., Smidsrød, O. & Brant, D.A. (1994). Aggregates in acidic solutions of chitosans detected by static light scattering. Carbohydr. Polym., 25, 13-23.
4. Araki, Y. & Ito, E. (1975). A pathway of chitosan formation in mucor rouxii (enzymatic deacetylation of chitin). Eur J Biochem., 55, 71-78.
5. Christensen, B.E., Mhyr, M., Aune, O., Hagen, S., Berge, A. & Ugelstad, J. (1996). Macroporous, monodisperse particles and their application in aqueous size exclusion chromatography of high molecular weight polysaccharides. Carbohydr. Polym., accepted manuscript.
6. Davis, B., Eveleigh, D.E. (1984). In Chitin, Chitosan and Related Enzymes, ed. J.P. Zikakis. Academic Press, New York, pp. 161-179.
7. Domard, A. (1987). Determination of N-acetyl content in chitosan samples by c.d. measurements. Int. J. Biol. Macromol., 9, 333-336.
8. Domszy, J.G. & Roberts, G.A.F. (1985). Evaluation of infrared spectroscope techniques for analysing chitosan. Macromol. Chem., 186, 1671-1677.
9. Draget, K.I., Vårum, K.M., Moen, E., Gynnild, H. & Smidsrød, O. (1992). Chitosan cross-linked with Mo(VI) polyoxyanions: a new gelling system. Biomaterials, 13, 635-638.
10. 13C-NMR become FT-IR and FT-Raman spectroscopy. Carbohydr. Polym., 17, 97-102.
11. Focher, B., Naggi, Torri, G., Cosani, A.A. & Terbojevich, M. (1992b). Chitosans from Euphausia superba. 2: Characterization of solid state structure. Carbohydr. Polym., 18, 43-49.
12. Hasegawa, M., Isogai, A. & Onabe, F. (1994). Molecular mass distribution of chitin and chitosan. Carbohydr. Res., 262, 161-166.
13. Hirano, S. (1988). Production and application of chitin and chitosan in Japan. In Chitin and Chitosan, eds G. Skjåk-Braek, T. Anthonsen & P. Sandford, pp. 37-43.
14. Korycka-Dahl, M.B. & Richardson, T. (1978). Activated oxygen species and oxidation of food constituents. CRC Crit. Rev. Food Sci. Nutr., 10, 209-241.
15. Kurita, K., Sannan, T. & Iwakura, Y. (1977). Studies on chitin, 4. Makromol. Chem., 178, 3197-3202.
16. Niola, F., Basora, N., Chornet, E. & Vidal, P.F. (1993). A rapid method for the determination of the degree of N-acetylation of chitin-chitosan samples by acid hydrolysis and HPLC. Carbohydr. Res., 238, 1-9.
17. Nud'ga, L.A., Plisko, E.A. & Danilov, S.N. (1971). Preparation of chitosan and study of its fractional composition. Zhurnal Obshcei Khimii, 41(11), 2555-2558.
18. Ottoy, M.H., Vårum, K.M., Christensen, B.E., Anthonsen, H.W. & Smidsrød, O. (1996). Preparative and analytical size-exclusion chromatography of chitosans. Carbohydr. Polym., accepted manuscript.
19. Painter, T., Smidsrød, O., Larsen, B. & Haug, A. (1968). A computer study of the changes in composition-distribution occurring during random depolymerisation of a binary linear heteropolysaccharide. Acta Chem. Scand., 22, 1637-1648.
20. Pelletier, A., Lemire, I., Sygusch, J., Chornet, E. & Overend, R.P. (1990). Chitin/chitosan transformation by thermomechano-chemical treatment including characterization by enzymatic depolymerization. Biotechnol. Bioeng., 36, 310-315.
21. Raymond, L., Morin, F.G. & Marchessault, R.H. (1992). Degree of deacetylation of chitosan using conductometric titration and solid-state NMR. Carbohydr. Res., 246, 331-336.
22. Roberts, G.A.F. (1992). Chitin Chemistry, The Macmillan Press Ltd., Hong Kong.
23. 13C nmr study of chitin, chitosan and N-acyl chitosans by cross polarization/magic angle spinning (CP/MAS) nmr spectroscopy. Conformational behaviour and gelation mechanism. In Chitin and Chitosan (Proceedings of the Second International Conference on Chitin and Chitosan), eds S. Hirano & S. Tokura, Sapporo, Japan, pp. 71-76.
24. Sandford, P.A. (1988). Chitosan: commercial uses and potential applications, In Chitin and Chitosan, eds G. Skjåk-Braek, T. Anthonsen & P. Sandford, pp. 51-69.
25. Sannan, T., Kurita, K. & Iwakura, Y. (1976). Studies on chitin, 2. Effect of deacetylation on solubility. Makromol. Chem., 177, 3589-3600.
26. Sashiwa, H., Saimoto, H., Shigemasa, Y., Ogawa, R. & Tokura, S. (1991). Distribution of the acetamide group in partially dacetylated chitins. Carbohydr. Polym., 16, 291-296.
27. Sashiwa, H., Saimoto, H., Shigemasa, Y., Ogawa, R. & Tokura, S. (1993). N-acetyl group distribution in partially deacetylated chitins prepared under homogeneous conditions. Carbohydr. Res., 242, 167-172.
28. Tanford, C. (1961). Physical Chemistry of Macromolecules, John Wiley, New York.
29. Tanner, S.F., Chanzy, H., Vincendon, M., Roux, J.C. & Gaill, F. (1990). High-resolution solid-state carbon-13 nuclear magnetic resonance study of chitin. Macromolecules, 23, 3576-3583.
30. Terbojevich, M., Cosani, A., Focher, B., Naggi & Ajorri, G. (1992). Chitosans from Euphausia superba. 1: Solution properties. Carbohydr. Polym., 18, 35-42.
31. Vårum, K.M., Anthonsen, M.W., Grasdalen, H. & Smidsrød, O. (1991). Determination of the degree of N-acetyl groups in partially N-deacetylated chitins (chitosans) by high-field n.m.r. spectroscopy. Carbohydr. Res., 211, 17-23.
32. 13C-N.m.r. studies of the acetylation sequences in partially N-deacetylated chitins (chitosans). Carbohydr. Res., 217, 19-27.
33. Vårum, K.M., Anthonsen, M.W., Ottoy, M.W., Grasdalen H. & Smidsrod, O. (1992). Chemical composition and sequences in chitosans determined by high-field proton and carbon N.M.R. spectroscopy - relation to solubility. In Advances in Chitin and Chitosan, (Proceedings from the 5th International Conference on Chitin and Chitosan), eds, C.J. Brine, P.A. Sandford & J.P. Zikakis. Princeton, New Jersey, pp. 127-136.
34. Vårum, K.M., Ottøy, M.H. & Smidsrød, O. (1994). Water-solubility of partially N-acetylated chitosans as a function of pH: Effect of chemical composition and depolymerization. Carbohydr. Polym., 25, 65-70.