Antioxidant silver nanoparticles (AgNPs) and platinum nanoparticles (PtNPs) were synthesized using from ginger and turmeric extracts by green method in this work. Thus synthesized these nanoparticles were characterized by UV-VIS spectroscopy, SEM-EDX and FTIR. The UV visible spectra of the AgNPs revealed a characteristic surface plasmon resonance peak at 420-425 nm and the UV visible spectra of the PtNPs revealed a characteristic surface plasmon resonance peak at 234-240 nm. The synthesized AgNPs and PtNPs were acted as a catalyst to degradation of dyes (rhodamine B, methyl orange and methylene blue) with sodium borohydride (NaBH4). Green synthesized antioxidant silver nanoparticles were effectively degrading the dyes nearly 4-10 min. and green synthesized antioxidant platinum nanoparticles were effectively degrading the dyes nearly 15-24 min. of exposure time.