1) [ScienceDirect]
International Journal of Biological Macromolecules, Volume 9, Issue 6, December 1987, Pages 333-336
Determination of N-acetyl content in chitosan samples by c.d. measurements
A. Domard
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http://dx.doi.org/10.1016/0141-8130(87)90004-3International Journal of Biological Macromolecules, Volume 14, Issue 3, June 1992, Pages 166-169
Improved method for i.r. determination of the degree of N-acetylation of chitosan
Alasdair Baxter, Michael Dillon, K.D. Anthony Taylor and George A.F. Roberts
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http://dx.doi.org/10.1016/S0141-8130(05)80007-8International Journal of Biological Macromolecules, Volume 4, Issue 6, October 1982, Pages 374-377
Determination of the viscometric constants for chitosan
George A.F. Roberts and Julian G. Domszy
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http://dx.doi.org/10.1016/0141-8130(82)90074-5Die Makromolekulare Chemie, Volume 175, Issue 7, pages 2209–2211, July 1974
Polyelectrolyte complex of heparin with chitosan
Yasuo Kikuchi
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http://dx.doi.org/10.1002/macp.1974.021750724Analytical Biochemistry, Volume 211, Issue 2, June 1993, Pages 240-241
Quantitative Determination of Chitosan and the Percentage of Free Amino Groups
Curotto E. and Aros F.
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http://dx.doi.org/10.1006/abio.1993.1263Carbohydrate Polymers, Volume 38, Issue 2, February 1999, Pages 115-122
Quantitative determination of chitosans by ninhydrin
Sabina Prochazkova, Kjell M. Vårum and Kjetill Ostgaard
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http://dx.doi.org/10.1016/S0144-8617(98)00108-8