Green synthesis of NPs (Ag & Au) from some plant families (Phyllanthaceae, Lamiaceae, Rutaceae and Euphorbiaceae) and their application in therapeutics: A review

Abstract

Plant mediated green synthetic route for silver and gold nanoparticles (AgNPs & AuNPs) from four plant fam ilies: Phyllanthaceae, Lamiaceae, Rutaceae and Euphorbiaceae and their therapeutic application of are summa rized in the present review article. Silver and gold nanoparticles prepared from the mentioned plant families were visualized with various therapeutic applications viz., anti-microbial, ant-bacterial, anti-cancer and anti oxidant activities etc. Owing to size and shapes, NPs green synthesized from various plants like Ricinus com munis (Ag), Tectona grandis (Ag), Plectranthus amboinicus (Ag, Au), Phyllanthus emblica (Ag, Au), Ricinu com munis (Ag), Leucas aspera (Ag, Au), Acalypha indica Linn . (Ag, Au) were envisioned with innumerable curative applications such as antimicrobial, anticancer, antibacterial, anti-oxidant, cytotoxicity, haemolytic and stimu lating effect etc. In the current review, eco-friendly green synthetic itineraries for synthesis of AgNPs and AuNPs are mainly focused. Phyto-components present in plants such as anti-oxidant molecules, terpenes, alkaloids, coumarins like quercetin, D-allose, 1-valine, ocosenamide molecules etc. are the responsible reduc ing agents for the capping reaction (Ag+ to Ag0 and Au3+ to Au0) of nanoparticle from metal precursors like AgNO3andHAuCl4.