Determination of the degree of N-acetylation for chitin and chitosan by various NMR spectroscopy techniques: A review

MR Kasaai - Carbohydrate polymers, 2010 - Elsevier
Up to know, several methods have been developed to determine degree of N-acetylation,
DA, for chitin and chitosan. In this article, an effort has been made to review the available …

Various methods for determination of the degree of N-acetylation of chitin and chitosan: a review

MR Kasaai - Journal of agricultural and food chemistry, 2009 - ACS Publications
Chitin, chitosan, and their derivatives have been identified as versatile biopolymers for a
broad range of agriculture and food applications. Up to now, several methods have been …

Advanced physico-chemical characterization of chitosan by means of TGA coupled on-line with FTIR and GCMS: Thermal degradation and water adsorption capacity

I Corazzari, R Nisticò, F Turci, MG Faga… - Polymer Degradation …, 2015 - Elsevier
In this study, chitosan, a commercially-available linear polysaccharide mainly used as
antibacterial agent, functional coating and drug-delivery system, is investigated to enlighten …

Preparation, physicochemical characterization and antimicrobial activities of novel two phenolic chitosan Schiff base derivatives

MA Hassan, AM Omer, E Abbas, WMA Baset… - Scientific reports, 2018 - nature.com
This study intends to develop novel two antimicrobial phenolic chitosan Schiff bases (I) and
(II) via coupling of chitosan with Indole-3-carboxaldehyde and 4 …

Therapeutic potential of two formulated novel chitosan derivatives with prominent antimicrobial activities against virulent microorganisms and safe profiles toward …

MA Hassan, TM Tamer, AM Omer, WMA Baset… - International Journal of …, 2023 - Elsevier
The development of new antimicrobial agents has been drawing considerable attention due
to the extreme escalation of multi-drug resistant microorganisms. We thus sought to …

[图书][B] Chitin, chitosan, oligosaccharides and their derivatives: biological activities and applications

SK Kim - 2010 - books.google.com
Providing comprehensive coverage of the biological activities and industrial applications of
Chitin, Chitosan, oligosaccharides, and their derivatives, this book presents a balance of …

A new look towards the thermal decomposition of chitins and chitosans with different degrees of deacetylation by coupled TG-FTIR

HFG Barbosa, DS Francisco, APG Ferreira… - Carbohydrate …, 2019 - Elsevier
Chitins and Chitosans with different degrees of deacetylation (DD¯) were analyzed for the
first time by thermogravimetry coupled to infrared spectroscopy TG-FTIR in order to evaluate …

The use of DSC curves to determine the acetylation degree of chitin/chitosan samples

LS Guinesi, ÉTG Cavalheiro - Thermochimica Acta, 2006 - Elsevier
The use of DSC curves is proposed as an alternative method to determine the degree of N-
acetylation (DA) in chitin/chitosan samples, based in both peak area and height of the …

N-acylated chitosan: hydrophobic matrices for controlled drug release

C Le Tien, M Lacroix, P Ispas-Szabo… - Journal of Controlled …, 2003 - Elsevier
N-acylation of chitosan with various fatty acid (C6–C16) chlorides increased its hydrophobic
character and made important changes in its structural features. Unmodified chitosan …

Alginate hydrogels coated with chitosan for wound dressing

MC Straccia, G Gomez d'Ayala, I Romano, A Oliva… - Marine drugs, 2015 - mdpi.com
In this work, a coating of chitosan onto alginate hydrogels was realized using the water-
soluble hydrochloride form of chitosan (CH-Cl), with the dual purpose of imparting …