| Literature DB >> 8729036 |
Y Shigemasa1, H Matsuura, H Sashiwa, H Saimoto.
Abstract
Various acetylated chitosan derivatives and mixtures of chitin and chitosan, covering the range of the degree of deacetylation (DDA) from 0-100% were analyzed by 1H-NMR spectroscopy and infrared spectroscopy. The use of the 1070 cm-1 or 1030 cm-1 absorption band as an internal standard in the determination of DDA from the absorbance of the amide I bands at 1655 cm-1 and 1630 cm-1 or the amide II band at 1560 cm-1 was studied. There is a good correlation between the results from IR spectroscopy and those from 1H-NMR spectroscopy.Entities:
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Year: 1996 PMID: 8729036 DOI: 10.1016/0141-8130(95)01079-3
Source DB: PubMed Journal: Int J Biol Macromol ISSN: 0141-8130 Impact factor: 6.953