Abstract: The Moringa oleifera nanoparticles may be synthesized by harvesting Moringa leaves, drying the Moringa leaves, powdering the dried Moringa leaves, suspending the powdered Moringa leaves in a solution, and spraying the solution into boiling water under ultrasonic conditions to obtain Moringa nanoparticles. The Moringa nanoparticles may be encapsulated by dissolving the Moringa nanoparticles and gum olibanum in ethanol to produce a mixture, injecting the inert organic phase of the mixture into an aqueous solution containing PVA, and homogenizing the aqueous solution. The Moringa nanoparticles may be useful in preventing the growth of cancer cells and in treating diabetes by inhibiting ?-glucosidase and/or ?-amylase activity.

Abstract: A method of preparing metal nanoparticles using an extract of desert truffles (Terfeziaceae) includes providing an aqueous solution including a metal salt; and combining an extract of Terfeziaceae with the aqueous metal salt solution to produce the metal nanoparticles. The metal salt can be silver nitrate (AgNO3) and the metal nanoparticles can be silver nanoparticles. The metal nanoparticles can have a mean diameter in the range of from about 5 nm to about 100 nm. The silver nanoparticles can be used as an antimicrobial agent and/or an anti-parasitic agent.