10.22376/ijpbs.2019.10.1.p1-12 Volume 7 Issue 4 2016 (October - December) The dried leaves of lessThan i greaterThan Wattakaka volubilis lessThan /i greaterThan was used for the synthesis of silver nanoparticles and evaluation of their antibacterial and antioxidant biological activities. The silver nanoparticles were characterized by UV-visible and Fourier transform infra-red spectroscopy (FTIR). The antibacterial activity of 1mM concentration of the silver nanoparticles against lessThan i greaterThan Escherchia coli lessThan /i greaterThan produces 18mm zone of inhibition and against lessThan i greaterThan  Bacillus subtilis lessThan /i greaterThan and lessThan i greaterThan Staphylococuss aureus lessThan /i greaterThan produces 17mm zone of inhibition at 50μg/ml concentration. Among the different concentration,1mM silver nanoparticles showed the highest anti-oxidant activity of 92.98% at 100μg/ml and thus being a good electron donor silver nanoparticles showed highest reducing power activity with optical density value of 0.144 at 100μg/ml. WASEEM IQBAL KHANDAY, EYINI MUTHUKUMARASAMY AND BALAJI PAULRAJ Wattakaka volubilis, DPPH, MIC, AFM, DLS 117-123