Nanoparticles (also known as ultrafine particles225) are defined as having one structural dimension of less than 100nm, making them comparable in size to subcellular structures, including cell organelles or biological macromolecules,222 thereby enabling their ready incorporation into biological systems. Nanoparticles synthesized from living systems are highly dynamic in nature. Plant-extracted metabolites that can act as reducing and stabilizing agents for the synthesis of nanoparticles are highly dependent on plant species, plant parts (root, stem, leaf, seed, etc.) and methods/conditions used for extraction.