Electrospun Poly-ε-Caprolactone Nanofibers Incorporating Keratin Hydrolysates as Innovative Antioxidant Scaffolds
Abstract
:1. Introduction
2. Results and Discussion
2.1. Thermogravimetric Analysis
2.2. Differential Scanning Calorimetry
2.3. Fourier-Transform Infrared Spectroscopy
2.4. Mechanical Properties
2.5. Scanning Electron Microscopy
2.6. Antioxidant Activities
2.7. Hemolytic Activity
3. Materials and Methods
3.1. Chemicals
3.2. Microorganism
3.3. Production of Keratin Hydrolysate (KH)
3.4. Nanofiber Manufacturing
3.5. Thermogravimetric Analysis (TGA)
3.6. Differential Scanning Calorimetry (DSC)
3.7. Scanning Electron Microscopy (SEM)
3.8. Fourier-Transform Infrared Spectroscopy (FTIR)
3.9. Mechanical Analysis and Rheological Measurements
3.10. Antioxidant Activity
3.10.1. DPPH Assays
3.10.2. ABTS Assays
3.11. Hemolysis Test
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Nanofiber | Tm (°C) | ΔHm (J/g) | Tonset (°C) | Xc (%) |
---|---|---|---|---|
PCL 10% (control) | 58.99 | 71.7060 | 54.89 | 87.87 |
PCL10 + 1% KH | 57.92 | 47.7180 | 54.22 | 58.48 |
PCL10 + 2.5% KH | 58.40 | 33.8602 | 54.40 | 41.49 |
PCL10 + 5% KH | 58.74 | 66.3929 | 54.33 | 81.36 |
PCL 15% (control) | 59.69 | 70.9667 | 55.08 | 86.97 |
PCL15 + 1% KH | 57.88 | 45.5125 | 53.79 | 55.77 |
PCL15 + 2.5% KH | 58.72 | 67.6502 | 54.48 | 82.90 |
PCL15 + 5% KH | 58.09 | 51.8343 | 54.62 | 63.52 |
Nanofiber | Young’s Modulus (MPa) | Tensile Strength (MPa) | Elongation at Break (%) |
---|---|---|---|
PCL 10% (control) | 42.64 ± 5.68 | 5.76 ± 0.17 | 138 ± 0.029 |
PCL10 + 1% KH | 27.96 ± 2.81 | 1.43 ± 0.36 | 132 ± 0.054 |
PCL10 + 2.5% KH | 25.93 ± 2.23 | 1.98 ± 0.40 | 142 ± 0.126 |
PCL10 + 5% KH | 25.85 ± 3.69 | 0.84 ± 0.20 | 122 ± 0.026 |
PCL 15% (control) | 24.81 ± 2.12 | 1.82 ± 0.44 | 183 ± 0.23 |
PCL15 + 1% KH | 20.57 ± 1.23 | 1.59 ± 0.18 | 179 ± 0.052 |
PCL15 + 2.5% KH | 18.99 ± 0.18 | 1.34 ± 0.059 | 199 ± 0.050 |
PCL15 + 5% KH | 19.96 ± 0.59 | 1.30 ± 0.20 | 186 ± 0.038 |
Nanofiber | Absolute Viscosity η (mPas) | |
---|---|---|
Control | 5% KH | |
PCL 10% | 25.82 | 184.89 |
PCL 15% | 26.20 | 234.36 |
Nanofiber | DPPH (%) | DPPH (μM) 2 | ABTS (%) | ABTS (μM) 2 |
---|---|---|---|---|
PCL (control) | nd 3 | nd | nd | nd |
PCL + 1% KH | 49.03 ± 0.02 | 972.2 ± 3.0 | 44.19 ± 0.02 | 972.0 ± 7.4 |
PCL + 2.5% KH | 49.24 ± 0.07 | 982.2 ± 13.5 | 49.61 ± 0.01 | 1153.3 ± 44.4 |
PCL + 5% KH | 49.07 ± 0.01 | 974.7 ± 1.5 | 56.21 ± 0.006 | 1228.7 ± 18.5 |
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Clerici, N.J.; Vencato, A.A.; Helm Júnior, R.; Daroit, D.J.; Brandelli, A. Electrospun Poly-ε-Caprolactone Nanofibers Incorporating Keratin Hydrolysates as Innovative Antioxidant Scaffolds. Pharmaceuticals 2024, 17, 1016. https://doi.org/10.3390/ph17081016
Clerici NJ, Vencato AA, Helm Júnior R, Daroit DJ, Brandelli A. Electrospun Poly-ε-Caprolactone Nanofibers Incorporating Keratin Hydrolysates as Innovative Antioxidant Scaffolds. Pharmaceuticals. 2024; 17(8):1016. https://doi.org/10.3390/ph17081016
Chicago/Turabian StyleClerici, Naiara Jacinta, Aline Aniele Vencato, Rafael Helm Júnior, Daniel Joner Daroit, and Adriano Brandelli. 2024. "Electrospun Poly-ε-Caprolactone Nanofibers Incorporating Keratin Hydrolysates as Innovative Antioxidant Scaffolds" Pharmaceuticals 17, no. 8: 1016. https://doi.org/10.3390/ph17081016