𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Studies on chitosan: 1. Determination of the degree of N-acetylation of chitosan by ultraviolet spectrophotometry and gel permeation chromatography

✍ Scribed by Sei-ichi Aiba


Book ID
118146804
Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
348 KB
Volume
8
Category
Article
ISSN
0141-8130

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


Straightforward Determination of the Deg
✍ Ricardo M. P. da Silva; JoΓ£o F. Mano; Rui L. Reis πŸ“‚ Article πŸ“… 2008 πŸ› John Wiley and Sons 🌐 English βš– 384 KB

## Abstract First‐derivative UV spectrophotometry is shown to be a reliable method for the determination of the degree of __N‐__acetylation of chitosan samples. A mathematical expression is derived that allows to determine the DA directly from the mass concentration of a chitosan solution and the f

A rapid method for the determination of
✍ FrΓ©dΓ©ric Niola; NΓΉria Basora; Esteban Chornet; Pierre FranΓ§ois Vidal πŸ“‚ Article πŸ“… 1993 πŸ› Elsevier Science 🌐 English βš– 599 KB

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

Determination of the degree of N-acetyla
✍ Kjell M. VΓ₯rum; Marit W. Antohonsen; Hans Grasdalen; Olav SmidsrΓΈd πŸ“‚ Article πŸ“… 1991 πŸ› Elsevier Science 🌐 English βš– 452 KB

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