78STUDIES ON ANTIBACTERIAL POTENCY OF BIOSYNTHESIZED AGNPS FROM A MOULD FUNGUSBiosynthesized nanoparticles are environmental friendly, cheap and completely safe in comparison to chemical and physical way of preparation, hence it is used widely in healthcare system. Nanoparticles using wild fungus from different sources have received attention in the recent times as it is very simple and economical method in the process of production and preparation. In the present study, AgNPs were synthesized extracellularly at room temperature by using one of the airborne fungus, Penicillium sp., isolated from indoors of Microbiology laboratory of KMCPGS, Pondicherry. The biosynthesized AgNPs were quite stable without using any toxic chemicals as capping agents. The spherical AgNPs ranged in the range of 30-70 nm and showed promising broad-spectrum antimicrobial activity. The ability to synthesize AgNPs as potential anti-microbial agents using the mould fungus was found to be an highly promising microbe for the green and sustainable production of nano-silver-metals and also to enhance its widespread application as an important drug in order to prohibiting and preventing several pathogenic bacteria in medical fieldbijuknayak@gmail.comResearch452014Antimicrobial agents,Nano-silver-metals,AgNPs,FTIR analysisB K Naya,Anima NandaDepartment of Botany, K. M. Centre for P.G. Studies (Autonomous), Airport Road, Lawspet, Pondicherry - 605008, India.,Dept. of Biomedical Engineering, Sathyabama University, Chennai-600119, India