Antioxidant activity of silver nanoparticles synthesized using Holothuria atra extract

Sea cucumber (Holothuria atra) was used as a reducing and capping agent in the green synthesis process to produce silver nanoparticles (AgNPs). The antioxidant activity of generated then evaluated. Seacucumber extract mixed with AgNO3 solution homogenized using magnetic stirrer create nanoparticles. It determined that nanoparticle production had occurred UV-Vis spectrophotometer. Before being examined for activity, were first given characterizing Fourier Transform Infra Red (FTIR) spectrometers. maximum uptake obtained at wavelengths 440 cm-1 Functional groups play role -OH- C=O, –C-O groups. free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) an absorbance (517 nm) properties. assay showed Silver higher than sea alone, IC50 value 4 ppm.Keywords:AntioxidantSeacucumberGreen SynthesisSilver NanoparticlesDPPH