Novel Chitosan-Based Schiff Base Compounds: Chemical Characterization and Antimicrobial Activity.
Riccardo FontanaPeggy Carla Raffaella MarconiAntonella CaputoVasak B GavalyanPublished in: Molecules (Basel, Switzerland) (2022)
Chitosan (CS) and its derivatives are receiving considerable attention for their great biocompatibility and broad-spectrum activities in many fields. In this work, we aimed to characterize the antimicrobial activity of novel chitosan Schiff bases (CSSB). CS was synthesized by double deacetylation of chitin (Cn) after its extraction from the armors of crustaceans Astacus leptodactylus , and CSSB-1 and CSSB-2 were synthesized by interaction of CS with 4-(2-chloroethyl) benzaldehyde (aldehyde-1) and 4-(bromoethyl) benzaldehyde (aldehyde-2), respectively, at room temperature. The synthesized compounds were characterized by elemental analysis, gel permeation chromatography (GPC), infrared spectroscopy (FTIR), thermogravimetry (TG), and differential scanning calorimetry (DSC). The antimicrobial activity against Gram-positive ( Staphylococcus aureus ) and Gram-negative ( Pseudomonas aeruginosa ) bacteria and against yeasts ( Candida albicans ) was significantly increased due to their higher solubility as compared to unmodified CS opening perspectives for the use of these compounds for antimicrobial prevention in different fields as, for example, food industry, cosmetics, or restoration.
Keyphrases
- gram negative
- candida albicans
- room temperature
- staphylococcus aureus
- biofilm formation
- drug delivery
- multidrug resistant
- pseudomonas aeruginosa
- wound healing
- hyaluronic acid
- acinetobacter baumannii
- mass spectrometry
- cystic fibrosis
- drug resistant
- high resolution
- oxide nanoparticles
- squamous cell carcinoma
- high speed
- tandem mass spectrometry
- climate change
- simultaneous determination