VALIDATION AND CHARACTERIZATION OF SILVER NANOPARTICLES FROM STRYCHNOS NUX-VOMICA – AN IMPORTANT ETHNOMEDICINAL PLANT OF KURNOOL DISTRICT , ANDHRA PRADESH , INDIA

Strychnos nux-vomica seed are extensively using by the ethnic groups of Kurnool district, Andhra Pradesh, India to cure vitiligo. Biological synthesis of silver nanoparticles was carried out from seed aqueous extract of Strychnos nux-vomica 10 ml seed extract was mixed to 90 ml of 1 mM aqueous of Ag(NO3)2 and was heated at 60-80 C for 20 min. The color change of aqueous solution into dark brown color. For characterization using UV-Vis spectrophotometer and AFM. AFM and UV-Vis spectrophotometer showed the formation of silver nanoparticles with spherical shape and average size 41.72 nm. SNPs have good antimicrobial activity against different microorganisms.