A bioactive film based on cashew gum polysaccharide for wound dressing applications

This work presents the development of a new bioactive material for wound therapeutics which may play a dual role of modulate metallo proteinases activity while prevents infection blocking out pathogenic microorganisms and foreign materials. A CGP/PVA film was activated by covalent immobilization of trypsin. Results from biocompatibility test revealed that PDL fibroblasts grown on the surface of CGP/PVA and the high amount of viable cells proved absence of cytotoxicity. Trypsin immobilized onto CGP/PVA film remained 100% active after 28 days stored dried at room temperature. In addition, CGP/PVA-trypsin film could be used for 9 cycles of storage/use without loss of activity. After immobilization, trypsin retained its collagenolytic activity, indicating this material as a promising material for wound dressing applications. (C) 2015 Elsevier Ltd. All rights reserved.