Abstract
Wound dressings are based on the creation of ideal environments for cell mobility, gas exchanges and to promote tissue healing and regeneration, besides controlling bacterial proliferation. Electrospinning is a simple, cheap and common technique used for such purposes and Ecovio®, a polymeric blend based on biocompatible polymers (poly(butylene adipate-co-terephthalate) (PBAT) and poly(lactic acid) (PLA)), is a good example of polymer with unique properties for wound dressing materials development. To ensure antimicrobial properties, Job’s tears (Coix lacrymajobi) extract was incorporated into the material. The obtained fiber mats were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X-ray diffractometry (DRX), optical microscopy (OM), and microbiological analysis. The interaction among the compounds of the extract and the polymeric matrix was inferred by the increase in the crystallinity degree and thermal stability of the fibers/extract. Also, a decrease in the diameter, roughness, and fiber homogeneity was observed. It happened due to the presence of extract in the fibers. Microbiological analysis (antimicrobial activity against S. aureus) indicated the effectiveness of the fibers/extract in preventing this bacteria growth, demonstrating the potential of this material for wound dressing purposes.
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12 October 2020
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Acknowledgments: This study was supported by UNIOESTE (Campus Toledo-PR, Brazil) and UFPR (Sector Palotina-PR, Brazil). The authors would like to thank both Brazilian official agencies CNPq and CAPES for financial support and fellowships.
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Breitenbach, G.L., Rosenberger, M.G., Rosenberger, A.G. et al. Antimicrobial Activity of Polymeric Microfibers Containing Coix Lacryma-Jobi Extract. Macromol. Res. 28, 869–876 (2020). https://doi.org/10.1007/s13233-020-8115-z
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DOI: https://doi.org/10.1007/s13233-020-8115-z