An optimised method to determine the degree of acetylation of chitin and chitosan by FTIR spectroscopy

An optimised method to determine the degree of acetylation of chitin and chitosan by FTIR spectroscopy

Linking up the user-friendly and low-priced FTIR with the more sophisticated and high-priced 13C CP/MAS NMR spectroscopies, an improved method to determine the degree of acetylation (DA) of chitins and chitosans was outlined. The method was established for the most complex polymorphic form (α-chitin...

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Veröffentlicht in:International journal of biological macromolecules 2002-12, Vol.31 (1), p.1-8
Hauptverfasser: Duarte, M.L, Ferreira, M.C, Marvão, M.R, Rocha, João
Format: Artikel
Sprache:eng
Schlagworte:
Acetylation
Animals
Chitin
Chitin - analogs & derivatives
Chitin - chemistry
Chitosan
Crustacea
Degree of acetylation
Magnetic Resonance Spectroscopy
Radar
Spectroscopy, Fourier Transform Infrared - methods
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Zusammenfassung:Linking up the user-friendly and low-priced FTIR with the more sophisticated and high-priced 13C CP/MAS NMR spectroscopies, an improved method to determine the degree of acetylation (DA) of chitins and chitosans was outlined. The method was established for the most complex polymorphic form (α-chitin) and for the most problematic range of DA values (most acetylated samples) and can easily be extended to the other polymorphic forms (β- and γ-chitins) and to other ranges of DA values.
ISSN:0141-8130
1879-0003
DOI:10.1016/S0141-8130(02)00039-9