With the discovery of nanoparticles, biotechnology products containing silver(0) have been used for a wide variety of purposes, such as fighting bacteria, fungi, treating wounds, burns, infections, and for use in medical and hospital supplies that affect a wide variety of pathogens. The silver nanoparticles (AgNPs) incorporated into the various types of products act as a reservoir for the continuous, controlled release of silver ions, thus achieving greater efficiency in the proposed treatment. Nanoparticles can be obtained using organic or inorganic reducing agents that reduce silver ions to metallic silver. However, the use of these chemical reagents and solvents usually makes these methods labor-intensive, expensive, and produces toxic waste, especially to the environment. An alternative is the green synthesis, which uses biological media or plant extracts to reduce the ion (Ag+) to its metallic form(Ag0). The synthesis of AgNPs using plant extracts reduces the use of chemical reducingagents, since this biological method involves the use of plant extracts containing molecules capable of reducing metal ions to AgNPs in a single step. The advantage of this method for the chemical one is that plants produce functional biomolecules that reduce metal ions and adhere to the surface of these nanoparticles, giving them several properties, such as protection and stability, besides high efficiency, environmental sustainability and low production cost. Therefore, more sustainable alternatives - both financially and/or environmentally - should be considered and studied. Thus, the aim of the current project isthe biosynthesis and characterization of silver nanoparticles using extracts from the plantStryphnodendron astringens and evaluation of its biological potential.
News published in Agência FAPESP Newsletter about the scholarship: