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180 PROCEEDINGS OF INTERNATIONAL SCIENTIFIC CONFERENCE ON APPLIED BIOTECHNOLOGYFigure 4. Mechanical strength of the nanofibers CS/PLA/PEG loaded with 12% capsaicin (stress, MPa %u2013 strain, %)Wettability of the nanofibers loaded with capsaicin was investigated by the contact angle method. The nanofibers were found to be hydrophilic with the contact angle of 73.7 %u00b1 1.5o (Figure 5). Figure 5. The measured contact angle images of the nanofibers CS/PLA/PEG loaded with 12% capsaicin3.2. Antibacterial effectThe results of evaluating the antibacterial activity of the nanofibers loaded with 12% capsaicin were shown in Table 1. The nanofibers exhibited antibacterial effect against three trains Escherichia coli ATCC 25922 (MIC value of 100 %u00b5g/mL),