✦ LIBER ✦

The degree of deacetylation of chitosan: advocating the first derivative UV-spectrophotometry method of determination

✍ Scribed by Su Ching Tan; Eugene Khor; Teck Koon Tan; Sek Man Wong

Book ID: 117224359
Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 106 KB
Volume: 45
Category: Article
ISSN: 0039-9140
DOI: 10.1016/s0039-9140(97)00288-9

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Straightforward Determination of the Deg

Straightforward Determination of the Degree of N-Acetylation of Chitosan by Means of First-Derivative UV Spectrophotometry

✍ Ricardo M. P. da Silva; João F. Mano; Rui L. Reis 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 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

Determination of the degree of acetylati

Determination of the degree of acetylation of chitosans by first derivative ultraviolet spectrophotometry

✍ Riccardo A.A. Muzzarelli; Roberto Rocchetti 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 439 KB

Enzymatic method for determination of th

Enzymatic method for determination of the degree of deacetylation of chitosan

✍ Fumio Nanjo; Ryosuke Katsumi; Kazuo Sakai 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 363 KB

A new method was developed for the accurate determination of the degree of deacetylation of chitosan. The method involves the complete hydrolysis of chitosan to glucosamine and N-acetylglucosamine by a cooperative action of chitosanolytic enzymes exo-beta-D-glucosaminidase, beta-N-acetylhexosaminida

Determination of the degree of acetylati

Determination of the degree of acetylation of chitosan by UV spectrophotometry using dual standards

✍ Dasheng Liu; Yuanan Wei; Pingjia Yao; Linbin Jiang 📂 Article 📅 2006 🏛 Elsevier Science 🌐 English ⚖ 102 KB

A new linear potentiometric titration me

A new linear potentiometric titration method for the determination of deacetylation degree of chitosan

✍ Xuan Jiang; Lirong Chen; Wei Zhong 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 135 KB

The degree of deacetylation (DD) is one of the most important properties of chitosan. Therefore, a simple, rapid and reliable method for the determination of DD of chitosan is essential. In this report, two new potentiometric titration functions are derived for the determination of DD of chitosan. T

UV Spectrophotometry: Improvements in th

UV Spectrophotometry: Improvements in the Study of the Degree of Acetylation of Chitosan

✍ Viviana Isabel Pedroni; María Elena Gschaider; Pablo Carlos Schulz 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 67 KB

## Abstract A simple and rapid method for determining the degree of __N__‐acetylation (__DA__) of chitosan by ultraviolet spectrophotometry using double beam equipment is proposed. D‐Glucosamine (GlcN) hydrochloride and __N__‐acetylglucosamine (GlcNAc) were used as model substances, and chitosan so