No abstract

In modern nano science and technology the interaction between inorganic nanoparticles and biological structures are the most exciting areas of research. The desire to synthesize nanoparticles, using efficient and green chemistry approaches has led to the use of microorganisms. Hence the present study reports on the screening of potent Lactobacillus spp for ecofriendly and economical synthesis of silver nanoparticles. Total of nine Lactobacillus strains were isolated from milk and milk products inoculated to sterilized milk and latter (after 24hr) the whey was collected by coarse filtration (Whatman no.40). Silver nitrate (1 mg) was added to 5 ml of pale yellow filtrate then incubated at 37⁰C. Absorption maximum was measured using spectrophotometer. The silver nanoparticles of size ranging from 2 to 20nm were synthesized by Lactobacillus sp VRS-2 which was confirmed by TEM and EDS analysis. Thus, rapid and ecofriendly biosynthesis of silver nanoparticles using whey appears to be economical approach and any research in this direction is encouraging.