Antioxidant Potential of Silver Nanoparticles Fabricated from Aqueous Extract of Murraya koenigii Leaves

In the present study, antioxidant activity of silver nanoparticles fabricated via green and inexpensive method from aqueous extract of Murraya koenigii leaves was determined. The first sign of the production of Ag nanoparticles was the colour change from yellow to brown. The silver nanoparticles (AgNPs) demonstrated higher DPPH (2,2- diphenyl-1-picrylhydrazyl) free radical scavenging activity, ranging from 11.35%-99.96% as compared to the aqueous extract of leaves ranging from 9.65%-91.20% with concentatration range of 1000 μg/ml to 100μg/ml. The total antioxidant capacity of AgNPs was also higher ranging from 20.51 mgAAE/g – 79.42 mgAAE/g while in aqueous extracts it ranged from 5.36 mgAAE/g - 59.31 mgAAE/g with concentatration range of 100 μg/ml to 1000 μg/ml. Based on these findings, AgNPs may indeed be useful for biomedical applications and drug delivery systems in the future.