N Savithramma
: JPB
The synthesis of metal nanoparticles using biological systems is an expanding research area due to the potential applications in nanomedicines. Nanoparticles synthesized by chemical method is not eco-friendly. The biological synthesis of silver nanoparticles is convenient and extracellular method which is environmentally safe. In the present study the silver nanoparticles synthesizes rapidly by using the medicinal plants Boswellia ovalifoliolata, Svensonia hyderabadensis and Shorea tumbuggaia. After assessing the formation of silver nanoparticles with the help of UV-Visible spectroscopy and were characterized by using EDAX and SEM. Diversity has been observed in size and shape of the silver nanoparticles synthesized in three plants. These phytosynthesized silver nanoparticles were tested for their antimicrobial activity. The test cultures of bacterial species of Proteus, Pseudomonas, Klebsiella, Bacillus and E. coli and fungal sspecies of Fusarium oxysporum, Curvularia lunata, Aspergillus niger and Rhizopus arrhizus were used. The microbial property of silver nanoparticles was analyzed by measuring the inhibitory zone. These silver nanoparticles synthesized from the plants of Boswellia ovalifoliolata showed moderately toxic to the E.coli and Pseudomonas species and highly toxic to Proteus species. Whereas the silver nanoparticles of Shorea tumbuggaia are highly toxic to Klebsiella species and moderately toxic to E.coli and Bacillus species. Svensonia hyderabadensis shows maximum inhibitory zone in Klebsiella followed by E. coli and Pseudomonas . The effect of silver nanoparticles synthesized from the selected plant species are varied on the growth of fungal species The important outcome of the study will be the development of value added products from medicinal plants of India for biomedical and nanotechnology based industries.
