In Situ Production of Silver Bio Nanoparticles from Marine Biosurfactant Bacteria and Evaluation of Its Antibacterial Activity

BIOSURFACTANTS FROM MICRORGANISMS Biosurfactants are the surface-active molecules synthesized by microorganisms. With the advantage of environmental compatibility, the demand for biosurfactants has been steadily increasing and may eventually replace their chemically synthesized counterparts. Marine biosurfactants produced by some marine microorganisms have been paid more attention, particularly for the antimicrobial activity against various microbes in medicinal field. In this study, the screening of biosurfactant-producing marine microorganisms, the determination of biosurfactant activity as well as the recovery of marine biosurfactant and the antibacterial activity of the biosurfactant were done. The uses of silver nanoparticles with marine biosurfactants for the antibacterial activity also discussed. The marine Serratia sp. had the ability to produce the biosurfactant and shows high amount of antibacterial activity against some pathogenic bacteria.