Spectrophotometric determination of deacetylation degree of chitinous materials dissolved in phosphoric acid
Resource
Macromolecular Bioscience 4 (10): 919-921
Journal
Macromolecular Bioscience
Journal Volume
4
Journal Issue
10
Pages
919-921
Date Issued
2004
Date
2004
Author(s)
Abstract
A simple spectrophotometric method is proposed for determining deacetylation degrees (DD) of chitinous materials using phosphoric acid as the UV-transparent solvent system. Calibrating by the extinction coefficients (A(210)) of D-glucosamine and N-acetyl-D-glucosamine, DD values (24-88%) were computed numerically. The results correlated well (R(2) = 0.9805, n = 50) with those obtained by solid-state (13)C NMR. Comparison of the results obtained by the proposed UV method and solid-state (13)C NMR.
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Type
journal article
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