Biosynthesis of silver nanoparticles from certain bacteria isolated in major soil types of Thiruvarur District

Silver nano particles is an eco friendly easy one step, nontoxic and inexpensive approach in medical industry. It acted as a reducing as well as stabilizing agent of materials. The present study summarized the biosynthesis and characterization of AGNPs using the bacillus sp., Enter ococcus sp., and Pseudomonas sp. And its antibacterial activity. The AGNPs were showed excellent antibacterial activity against clinically isolated pathogens. The maximum zone were recorded in the higher concentration (100μl) of bacillus sp. AGNPs particle against E.coli (28mm), K.pneumoniae (24mm), Lactobacillus sp (27mm), A.niger (20mm), A.terrreus (20mm) and Penecillium sp (25mm) were recorded respectively. In the same way Enterococcus sp was 28, 30, 26, 16 22 25mm zone in E.coli, K.pneumoniae, Lactobacillus sp., A.niger, A.terreus and Penicillium sp. Against 100μl concentration. Where Pseudomonas sp. Against E.coli, K.pneumoniae, Lactobacillus sp., A.niger, A.terreus and Penecillium sp. was 26, 20, 24, 18, 24 and 12 mm diameter were recorded correspondingly.