Preparation and antibacterial activity of Schiff bases from O-carboxymethyl chitosan and para-substituted benzaldehydes

Interaction of O-acylated chitosans with biomembrane models: Probing the effects from hydrophobic interactions and hydrogen bonding

“…Most significantly, chitosans may also be derivatized with incorporation of acyl and alkyl chains [9,10], and these derivatives have been proven to be even more efficient than their parent chitosans [11]. This is the case, for example, of the antimicrobial activity of chitosan derivatives against bacteria (Gram positive or negative) [10,12,[14][15][16][17], fungi [13] or both [18][19][20]. The reasons for the enhanced action of the derivatized chitosans are not known in detail, but they must be related to the damage or breaking of cell membranes resulting from the interplay between ionic and hydrophobic interactions.…”

Cu(II) and Pd(II) complexes of water soluble O-carboxymethyl chitosan Schiff bases: Synthesis, characterization

“…5a) and OCMCS-6a (Fig. 5b) showed condensation of CS with 5a or 6a at 166.70 and 166.15 ppm, respectively [35]. The signals at 175.76 ppm (OCMCS-5a) and 177.59 ppm (OCMCS-6a) correspond to carbonyl groups of carboxymethylated chitosan [35].…”

Preparation and hemocompatibility of electrospun O‐carboxymethyl chitosan/PVA nanofibers

“…Chitosan was completely deacetylated as described previously . 10 g chitosan was added into a 500 mL three‐neck flask containing a pre‐dissolved mixture of 200 mL DMSO, 20 g NaOH, and 0.4 g HTAB.…”