
The objective of the present study was to synthesis of nanoparticles in plant extract which gained considerable importance when compared to bulk counterparts. Among many nanoparticles, zinc oxide (ZnO) nanoparticles are very much important due to their utilization in drug-delivery system. In present study Celosia argentea L seeds were selected to synthesise zinc oxide nanoparticles and to evaluate its anticancer and antiplatelet activity. From the results it can be concluded that Celosia argentea L seeds extract exhibited significant antioxidant activity and it might be due to various phytoconstituents in it.