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Zmejkoski, Danica; Spasojević, Dragica; Orlovska, Irina; Kozyrovska, Natalia; Soković, Marina; Glamočlija, Jasmina; Dmitrović, Svetlana; Matović, Branko; Tasić, Nikola; Maksimović, Vuk; Sosnin, Mikhail; Radotić, Ksenija
International journal of biological macromolecules, 10/2018, Letnik: 118, Številka: Pt AJournal Article
Lignins and lignin-derived compounds are known to have antibacterial properties. The wound healing agents in the form of dressings produce faster skin repair and decrease pain in patients. In order to create an efficient antimicrobial agent in the form of dressing in the treatment of chronic wounds, a composite hydrogel of bacterial cellulose (BC) and dehydrogenative polymer of coniferyl alcohol (DHP), BC-DHP, was designed. Novel composite showed inhibitory or bactericidal effects against selected pathogenic bacteria, including clinically isolated ones. The highest release rate of DHP was in the first hour, while after 24 h there was still slow release of small amounts of DHP from BC-DHP during 72 h monitoring. High-performance liquid chromatography coupled with mass-spectrometry showed that BC-DHP releases DHP oligomers, which are proposed to be antimicrobially active DHP fractions. Scanning electron microscopy and atomic force microscopy micrographs proved a dose-dependent interaction of DHP with BC, which resulted in a decrease of the pore number and size in the cellulose membrane. The Fourier-transform infrared absorption spectra of the BC-DHP showed that DHP was partly bound to the BC matrix. The swelling and crystallinity degree were dose-dependent. All obtained results confirmed BC-DHP composite as a promising hydrogel for wounds healing. •Novel composite BC-DHP in form of dressing showed inhibitory/bactericidal effect.•BC-DHP showed highest release of the active substance during the first 24 h.•Released active compounds were oligomers of coniferyl alcohol.•High swellability of hydrogel confirmed its potential role in chronic wound healing.
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