The Isolation and Characterization of Magnetotactic Bacteria from Iron Ore Soil for Synthesis of Magnetic Nanoparticles as Potential Use in Magnetic Hyperthermia

Magnetotatic bacteria have been isolated from iron cap belt of Cuddegali Voril Soddo iron ore mine. Here magnetic measurement and non magnetic analysis helps to detect biogenic magnetite in soil sample. The cultivation of magnetotactic bacteria was done in modified enrichment medium and incubated at room temperature (25–30 C). A short rod of magnetotactic bacteria contained two or more magnetosomes revealed under TEM, having the shape of rounded and irregular. The SEM was used for morphological study of MTB. Energy spectrum analysis with SEM showed that iron oxides were main component of magnetic particles. This study reports the isolation and characterization of magnetotactic bacteria isolated from the mining area of Goa region, India. It also points towards the ability of modified media to support growth of magnetotactic isolates. The result depicts that there is a direct correlation of soil magnetic susceptibility with biogenic magnetite, geology and soil process. The natural way for the synthesis of nanoparticles by microbes, which is potent ecofriendly, green synthesis leads to the development of advance research in nanotechnology. The result gives the direction for future work, that is it can be used as potential heating agent in magnetic fluid hyperthermia (MFH).