Green synthesis of metal nanoparticles (NPs) from plant extracts has attracted significant interest in modern medicine. Therefore, this study prepared an aqueous extract of Sophora flavescens roots, which are used in folk medicine to treat several diseases, including bacterial infections. In addition, silver NPs (AgNPs) were synthesized from root extract using the green synthesis method. The NPs were diagnosed using modern methods. Additionally, the antibacterial activity of the root aqueous extract and AgNPs aqueous preparation (at concentrations of 7% and 9%, respectively) was examined against selected isolates of multidrug-resistant Pseudomonas aeruginosa and Staphylococcus aureus. The results indicated that both the plant extract and NP preparations inhibited pathogenic bacterial isolates.
Pesticides are vastly used for pests monitoring in agriculture and public health fields, causing severe depletion in quality of drinking water. Moreover, most insecticides resist biodegradation and carcinogen even at very low levels up to Parts per billion (ppb). This study was carried during April/2019 and extended to January/ 2020 in Directorate of Environment and Water, Baghdad-Iraq to synthesis and characterization silver bionanoparticles by using Bacillus thuringiensis israelensis extract (biological methods) and investigate this activity on the chlorpyrifos pesticide under laboratory conditions. The silver bionanoparticles were characterized using many techniques, X-ray Diffractometer (XRD Fourier Transform Infrared (FTIR), atomic force microscopy (AFM) and zeta potential analyzer spectroscopy. The results of XRD technique confirmed the crystalline nature of the nanoparticles. AFM analysis revealed that particles were spherical, single or in aggregates. Determination the shafting of active groups sites was performed using FTIR. The zeta potential values were -36.33 mV for AgNPs. The biodegradation of chlorpyrifos using silver bionanoparticles was determined quantitatively using high performance liquid chromatography (HPLC) techniques. From the result, it can be suggested that silver bio-nanoparticles from Bacillus thuringiensis israelensis extracts lead to biodegradation of chlorpyrifos completely without forming harmful products confirmed by GC-MS analysis. We endorse that this process has scientific potential in the biodegradation of chlorpyrifos pesticide contaminated water using Green biosynthesis of nanoparticles.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.