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Ana Krkobabić,Darka Marković,Aleksandar Kovačević,Vanja Tadić,Marija Radoičić,Tatjana Barudžija,Tatjana Ilic-Tomic,Maja Radetić 한국섬유공학회 2022 Fibers and polymers Vol.23 No.4
The aim of this study was to develop antimicrobial nanocomposite textile material comprising of Cu-basednanostructures synthesized on oxidized cotton fabric using Arctostaphylos uva-ursi (L.) Spreng., Ericaceae (bearberry leaves)as a green reducing agent for adsorbed Cu2+-ions. In order to provide sufficient number of carboxyl groups for complexationwith Cu2+-ions a two-step oxidation process with NaIO4 and NaClO2 was carried out. The influence of NaIO4 concentrationon content of carboxyl groups and Cu-based nanoparticles was studied by FTIR and AAS. HPLC analysis identified thegallic acid known as a reducing agent in bearberry leaves extract. FESEM and XRD analyses revealed that using bearberryleaves extract and gallic acid solution as reducing agents led to a formation of spherical Cu2O/CuO nanoparticles and CuOnanosheets, respectively. These nanoparticles and nanosheets provided excellent antibacterial activity against Gram-negativebacteria Escherichia coli and Gram-positive bacteria Staphylococcus aureus. Cytotoxicity on human keratinocyte cells wasshown to depend on their copper content.