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Biologically Synthesized Gold Nanoparticles with Enhanced Antioxidant and Catalytic Properties
Melinda David1,2, Teodor A Enache3, Lucian Barbu-Tudoran4,5
1Laboratory for Quality Control and Process Monitoring, University of Bucharest, 4-12 Elisabeta Blvd., 030018 Bucharest, Romania.
Pharmaceuticals (Basel, Switzerland)
|September 28, 2024
Summary
Eco-friendly gold nanoparticles synthesized using plant extracts demonstrate potent antioxidant and catalytic properties. These biocompatible nanoparticles show promise in protecting against oxidative stress and lipid peroxidation for biomedical applications.
Area of Science:
- Nanotechnology
- Biomedical Engineering
- Materials Science
Background:
- Reactive oxygen species (ROS) cause oxidative stress, linked to various diseases.
- Nanomaterials with antioxidant properties offer potential protective effects.
- Biological synthesis of nanoparticles using plant extracts leverages natural compounds.
Purpose of the Study:
- To develop eco-friendly gold nanoparticles (b-AuNPs) using plant extracts.
- To characterize the synthesized b-AuNPs and evaluate their antioxidant and catalytic activities.
- To explore the potential of b-AuNPs in preventing oxidative stress-related damage.
Main Methods:
- Ultrasound-assisted and pressure-enhanced extraction of compounds from sea buckthorn, lavender, walnuts, and grapes.
- Biological synthesis of gold nanoparticles (b-AuNPs) using these plant extracts.
- Characterization using UV-Vis spectroscopy, FTIR spectroscopy, and transmission electron microscopy.
- Electrochemical evaluation of catalytic and scavenging effects on hydrogen peroxide (H2O2) and lipid peroxidation.
Main Results:
- Successful synthesis of stable and reproducible b-AuNPs.
- Demonstrated antioxidant activity, including scavenging of H2O2.
- Evidence of protective effects against lipid peroxidation.
- Enhanced catalytic properties of the b-AuNPs.
Conclusions:
- Plant-extract-mediated synthesis provides a sustainable route to functionalized gold nanoparticles.
- The prepared b-AuNPs exhibit significant antioxidant and catalytic capabilities.
- These b-AuNPs hold promise for future biomedical applications in combating oxidative stress.
