Biosynthesis of Silver Nanoparticles using Root Extract of the Saussurea lappa (DECNE.) Clarke

摘要

Saussurea lappa (Decne.) Clarke commonly known as Kuth or Costus is an important endemic herb of Kashmirvalley belonging to family Asteraceae. It is enlisted in the most endangered list of CITES (Appendix – I).The aqueous root extract resulted change in colour from light yellowish to brownish black after mixing with the AgNO3 solutionwhich visually indicates the formation of silver nanoparticles. This was further confirmed with the UV-Vis spectroscopy showingsharp bands of root derived silver nanoparticles at around 418 nm. The mean particle size of silver nanoparticles derived fromroot extract was found 171.3 nm respectively.