Natural Substances for the Synthesis of Silver Nanoparticles against Escherichia coli: The Case of Megaphrynium macrostachyum (Marantaceae), Corchorus olitorus (Tiliaceae), Ricinodendron heudelotii (Euphorbiaceae), Gnetum bucholzianum (Gnetaceae), and Ipomoea batatas (Convolvulaceae)

The development of drug-resistant strains is rising and the search for new and novel ways of fighting new or reemerging microbes goes on. A hope of treating such multidrug-resistant infections came from plants mediated nanoparticles since nature is a generous source which provides a variety of chemical compounds that can be used for new drug discovery. Silver nanoparticles are reported to possess antiviral, antibacterial, antifungal, antiparasitic, larvicidal activity and anticancer properties. We reported green synthesis of silver nanoparticles mediated food plants Megaphrynium macrostachyum, Corchorus olitorus, Ricinodendron heudelotii, Gnetum bucholzianum, and Ipomoea batatas and their antibacterial efficacy against the Enterobacteriaceae Escherichia coli. The nature and size of the obtained nanoparticles are discussed as well as their Minimum Inhibitory Concentration (MIC) and the Minimum Bactericide Concentration (MBC) values considering their application in medical industry. [ABSTRACT FROM AUTHOR]