Title : A food waste based polyphenolic extract for synthesizing gold nanoparticles as powerful multifunctional platforms in cosmetics and biomedicine
Abstract:
In this work, the synthesis and characterization of innovative gold nanoparticles (AuNPs) as multifunctional platforms in biomedicine and cosmetics is presented. In detail, grape pomace, a typical agricultural waste derived from Vitis vinifera, is proposed as raw material from which a water-based polyphenolic extract can be obtained and used for synthetizing AuNPs by following an approach in accordance with the principles of Green Chemistry and Circular Economy. This extract acts as reducing agent towards an aqueous solution of tetrachloroauric acid (the metal salt precursor of the metallic gold), thanks to the high content of polyphenols, allowing the formation of nanoparticles. The obtained AuNPs are characterized through several complementary techniques, namely UV-Visible, ATR-FTIR and XPS spectroscopies, XRD, TEM, DLS and Zeta Potential analyses. These hybrid nanostructures can find application as multifunctional platforms in biomedicine for photodynamic and photothermal therapy, as well as for cosmetic formulations due to their exhibited antioxidant, skin-lightening, and sunscreen properties.
What will audience learn from your presentation
- The explained concepts could be useful for showing the development of an alternative nanomaterials’ synthetic approach in accordance with the Green Chemistry principles.
- The valorization of food/agricultural wastes will be proposed according to Circular Economy principles.
- Information related to the morphological, chemical, and physical characterization of gold nanoparticles will be presented and discussed.
- Information about exploring the antioxidant, sunscreen and skin-lightening properties of gold nanoparticles will be presented.
