Biosynthesis of Gold Nanoparticles by Essential Oil of Diplotaxis Acris Characterization and Antimicrobial Activities

The present work reports a green biosynthesis of gold nano particles (EO-AuNPs) using an essential oil (EO) as reducing agent the Au(III) in HAuCl4. EO was extracted by hydro-distillation from Diplotaxis acris flowers. A total 16 compounds were detected GC–MS and 5-methylsulfanylpentanenitrile identified major component (73.60 %). biosynthesized EO-AuNPs characterized performing UV–Vis, IR,XRD TEM analyses.The UV-Vis revealed typical features surface plasmon resonance (SPR) AuNPs at ~526 nm. FT-IR spectrum exhibited nitrile (-C?N) functional group indicating that -C?N-bearing components are likely acting stabilizing agents for formation EO-AuNPs. plausible scheme EO-AuNPsformation proposed.The analysis showed EO- almost spherical shape with average particle size 12.7 In addition, antimicrobial activity carried out diffusion agar wells method. results proved displayed potential against gram negative strains, maximum zone inhibition mm E. coli concentration 100 µg / ml.