N-acetylation in chitosan and the rate of its enzymic hydrolysis
β Scribed by Shigehiro Hirano; Hisaya Tsuchida; Norio Nagao
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 287 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0142-9612
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π SIMILAR VOLUMES
A simple and rapid method for the quantitative determination of N-acetyl groups in chitin-chitosan samples consists of an acid hydrolysis conducted at high temperature with a mixture of sulfuric and oxalic acids. The acetic acid formed is determined by spectrophotometry at 210 nm after separation fr
## Abstract Functional properties of the amino polysaccharides, chitin and chitosan, vary significantly with their acetyl content. The acid hydrolysisβHPLC method offers good accuracy and precision to assay the acetyl content regardless of the solubility of the sample. In this research, the hydroly
The composition and sequence of 2-acetamido-2-deoxy-beta-D-glucose (GlcNAc) and 2-amino-2-deoxy-beta-D-glucose (GlcN) residues in partially N-deacetylated chitosans, prepared under homogeneous and heterogeneous conditions, have been determined by 1H-n.m.r. spectroscopy. It was necessary to depolymer