Assessment of chemically and enzymatically modified chitosan with eugenol as a coating for viscose functionalization for potential medical use

The present work deals with the preparation of chemically and enzymatically eugenol-modified chitosan its application as a green coating on viscose for potential production medical textiles. elemental composition was determined by attenuated total reflection Fourier transform infrared (ATR FT-IR) proton nuclear magnetic resonance ( 1 H NMR) spectroscopy. Moreover, potentiometric titration used to estimate number accessible amino groups. chitosan–eugenol formulation possesses high antioxidant capacity level, shown content phenolic compounds analyzed following methods: (a) Folin–Ciocalteu; (b) reduction Fe 3+ ions; (c) α, α-diphenyl-β-picrylhydrazyl (DPPH • ). Viscose coated formulations evaluated ATR FT-IR spectroscopy Acid Orange VII spectrophotometric methods, results which demonstrated successful deposition these fibers. Scanning electron microscopy showed presence functional viscose. Finally, antimicrobial testing performed determine inhibition selected pathogenic micro-organisms using ASTM E 2149-01 standard. activity functionalized investigated spectrophotometrically DPPH method. It found that coatings impart against Gram-positive Gram-negative bacteria well fungi, cause free radicals introducing an character. chemical enzymatic modification offers many opportunities incorporation natural active ingredients into system, provides good basis further related functionalization sanitary use.