Regiospecific Grafting of Chitosan Oligomers Brushes onto Silicon Wafers. [PDF]
Int J Mol Sci, 2022 The functionalization of surfaces using chitosan oligomers is of great interest for a wide range of applications in biomaterial and biomedical fields, as chitosan oligomers can provide various functional properties including biocompatibility, wetting, adhesion, and antibacterial activity.
Garreau C +5 more
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Synergistic Antimicrobial Effect of Chitosan Polymers and Oligomers [PDF]
Molecular Plant-Microbe Interactions, 2021 This study evaluated the efficacy of the combined application of well-characterized chitosan polymer (degree of acetylation = 10%, degree of polymerization [DPn] = 90, and dispersity [ÐDP] = 2.8) and oligomers (partially acetylated chitosan polymers and ...
Maha Attjioui +3 more
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Functional Properties of Chitosan Oligomers Obtained by Enzymatic Hydrolysis. [PDF]
Polymers (Basel), 2023 The aims of this study were to obtain chitooligosaccharides (COS) from chitosan (CH) with improved functional properties and comparison of the use of two different enzymes: commercial cellulase (CL) and the dedicated enzyme chitosanase (CS). After enzymatic reaction, chitosan oligomers (NFs) were isolated by methanol into two fractions: precipitate ...
Kulig D +5 more
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Alginate gels crosslinked with chitosan oligomers - a systematic investigation into alginate block structure and chitosan oligomer interaction. [PDF]
RSC Adv, 2021 Three alginates with different block structures, poly-M, poly-G, and poly-MG, were investigated upon ionic crosslinking with chitosan oligomers, using circular dichroism, rheology, and simulations, revealing a unique high gel strength poly-MG chitosan gelling system.
Kopplin G +3 more
europepmc +4 more sources
Unraveling the Impact of Acetylation Patterns in Chitosan Oligomers on Cu<sup>2+</sup> Ion Binding: Insights from DFT Calculations. [PDF]
Int J Mol Sci, 2023 Chitosans are partially acetylated polymers of glucosamine, structurally characterized by their degree of polymerization as well as their fraction and pattern of acetylation.
Singh R, Smiatek J, Moerschbacher BM.
europepmc +2 more sources
Further investigation on the degree of deacetylation of chitosan determined by potentiometric titration [PDF]
Journal of Excipients and Food ChemicalsThe degree of deacetylation (DDA) of various low molecular weight chitosan (LMWC) species as the hydrochloride and free base (amine form) was determined by direct and back potentiometric titration, respectively.
Kamal Sweidan +5 more
doaj +2 more sources
Biomacromolecules, 2008 The preparation of a homogeneous series of chitin/chitosan oligomers (chito-oligomers) with the same distribution of degrees of polymerization (DP) ranging from 2 to 12, but with various average degrees of N-acetylation (DA) from 0 to 90% is described. This DA-series was obtained according to a two-step chemical process involving (i) the production of ...
Trombotto, Stéphane +3 more
openaire +5 more sources
Enzymatic production of defined chitosan oligomers with a specific pattern of acetylation using a combination of chitin oligosaccharide deacetylases. [PDF]
Sci Rep, 2015 Chitin and chitosan oligomers have diverse biological activities with potentially valuable applications in fields like medicine, cosmetics, or agriculture. These properties may depend not only on the degrees of polymerization and acetylation, but also on
Hamer SN +6 more
europepmc +3 more sources
Biological activities of chitin, chitosan and respective oligomers
, 2010 Chitin and chitosan have been receiving great attention as a novel functional material for their excellent biological properties such as biodegradation, immunological, antioxidant and antibacterial activities. However, its use has been scarcely developed due to its high molecular weight, which causes poor water solubility and high viscosity of the ...
Tavaria, F. K. +5 more
openaire +3 more sources
Chitosan-Based Bioactive Formulations for the Control of Powdery Mildew in Viticulture
Agronomy, 2022 Grapevine is highly susceptible to fungal diseases, whose incidence and severity increase due to climate change. The present work focuses on the assessment of eight combinations of natural products with chitosan oligomers with fungicidal capacity that ...
David Ruano-Rosa +6 more
doaj +1 more source