Processing and antibacterial properties of chitosan-coated alginate fibers.

Abstract

The preparation of chitosan-coated alginate fibers by a wet spin process is presented and the characterization of the antibacterial activities of these fibers is discussed. Preformed calcium alginate fibers were passed in chitosan acetate solutions. The coagulation method of the coating consisted in the immersion of fibers in a bath of calcium dihydroxide solution (0.1 M). The antibacterial evaluation was achieved by a CFU (Colony-Forming Units) counting method after 6 h of incubation at 37 °C. The incorporation of chitosan on calcium alginate fibers brings antibacterial activities against Staphylococcus epidermidis, Escherichia coli and various Staphylococcus aureus strains namely MSSA (Methicillin Sensitive Staphylococcus aureus), CA-MRSA (Community Associated Methicillin Resistant Staphylococcus aureus) and HA-MRSA (Healthcare Associated Methicillin Resistant Staphylococcus aureus) which make these chitosan-coated fibers potential candidates for wound dressing materials. Developing a wound dressing with the haemostatic and healing properties of alginate combined with antibacterial properties of chitosan is envisioned for fighting against the infections and more particularly nosocomial diseases.

• Authors: Mélanie Dumont, Régis Villet, Manon Guirand, Alexandra Montembault, Thierry Delair, Stéphane Lack, Michel Barikosky, Agnès Crepet, Pierre Alcouffe, Frédéric Laurent, Laurent David
• Journal: Carbohydrate polymers (Carbohydr Polym) Vol. 190 Pg. 31-42 (Jun 15 2018) ISSN: 1879-1344 [Electronic] England
• PMID: 29628252 (Publication Type: Journal Article)
• Copyright: Copyright © 2017 Elsevier Ltd. All rights reserved.