Plants are one of the richest resources of the world due to a wide range of climate, topology and environments in the country. It is thought that there are over 16000 species of flowering plants, which account for 6% of the total plant species in the world. Over 30% of the geographical area of India, including that in the Himalayas, Western Ghats and Andaman and Nicobar islands, still remain to be floristically explored. Secondary metabolites serve as competitive weapons against bacteria, fungi, amoeba, plants, insects, higher animals and as metal transporting agents. Plants are subjected towards the production of nanoparticles because of its advantages of easily available, safe to handle and broad range of biomolecules such as alkaloids, terpenoids, phenols, flavanoids, tannins, quinones etc. In the present investigation, copper nanoparticles where synthesized from Bauhinia tomentosa leaf extract and subjected for characterization, antioxidant assay, hydrogen peroxide reduction and antibacterial activity studies. The results proved authentically that the copper nanoparticles are efficient in their activities. © 2020 Elsevier B.V., All rights reserved.