Biossíntese de nanopartículas de prata com extratos da guazuma ulmifolia lam (mutamba): estudo e desenvolvimento

Abstract

The biosynthesis of metallic nanoparticles from plant extracts has gained interest due to its relative simplicity, low cost, and avoidance of toxic reagents. In this context, silver nanoparticles have stood out because of their properties, particularly for applications in the healthcare field, owing to their low toxicity. Plant extracts are rich in compounds with antioxidant properties, capable of reducing and stabilizing silver. Therefore, this study aims to synthesize and characterize silver nanoparticles using extracts from the leaves and bark of Guazuma ulmifolia (mutamba). The crude extracts from the leaves and bark were subjected to various tests with different concentrations of silver nitrate solution (1.0 mmol, 1.5 mmol, 2.5 mmol, and 4.0 mmol) under reaction conditions at 50°C and 25°C. In all tests, nanoparticles were observed through the presence of plasmonic bands in the range of 350–450 nm. Initial studies showed that the leaf and bark extracts of Guazuma ulmifolia are promising for obtaining AgNPs.