Chemical structure of terephthalic acid, polyester (PET, polyethylene terephthalate) plastic building block

[dropcaps round=”no”][/dropcaps]The authors present a method of obtaining gold or silver nanoparticles based on a chemical reduction process using aqueous extracts from plant materials as a source of reducing and stabilizing agents. Wild rose fruits and white grapes were used in the study. They are the natural sources of ellagic acid, ascorbic acid and anthocyanins – donor antioxidant compounds which are able to reduce ions and carry them to the zero oxidation state (metallic form). The resulting extracts are also a source of other substances which may effectively stabilize nanometal suspensions, including mucous compounds, peptides and biopolymers. The adsorption of these compounds on the surface of nanoparticles prevents their aggregation. The use of the aqueous extracts of wild rose fruits and white grapes provides both reducing and stabilizing conditions. This development remains in accordance with the principles of “green chemistry”. An important advantage of the presented method is the use of environmentally friendly materials, ensuring the applicability of the final product in many demanding areas (e.g. dentistry, cosmetology, pharmacy, medical industry and others). Furthermore, the method does not adversely affect the environment.

The offering involves an innovative, environmentally friendly and cost-effective technology for preparation of silver and gold nanoparticles based on chemical reduction process using natural plant materials as well as nanosilver and nanogold suspensions. The product may be applied in the preparation of cosmetic oxides such as titanium, aluminum, zinc or iron oxide. This will result in semi-finished cosmetics, enriched with biocidal properties. It is assumed that this product will be purchased by small and medium-sized companies from the cosmetics industry sector. The offering is based on clean and environmentally friendly technologies which means that adopting it will be seen as a modern, R&D-driven operation. This strategy is essential in raising the level of innovation at small and medium businesses. The product may be subject to a license agreement (full, non-exclusive or open); alternatively, cooperation may proceed in the framework of a strategic alliance of companies operating within different markets. Finally, a joint venture or spin-off commercialization strategy is also possible.



Meet the presenter:
 Marcin Banach, Cracow University of Technology
Jolanta Pulit-Prociak, Cracow University of Technology