CHARACTERIZATION AND BACTERIAL TOXICITY OF TITANIUM DIOXIDE NANOPARTICLES

Abstract

India is a second highest populated developing country of the world. Environmental pollution is a big problem in India and the waste disposal laws are not as stringent as in the developed countries. Among the various nanoparticles, TiO NPs are receiving increasing attention for a large variety of 2 applications. Certainly, with the development of applications and production of the TiO NPs, there is a major concern on the toxic effects due to 2 their small size, large surface area and potential to produce ROS. TiO NPs are highly mobile and reach the environment by numerous routes and get 2 further degraded or modied into different forms by environmental factors. India carries a rich microbial diversity, producing industrial compounds like enzymes, antibiotic and biofertilizers. These massive number of nanoparticles continuously being released may lead to loss of our microbial diversity or effect their different physiological activities. In the present study, we showed how the structural differences in the cell walls of different bacteria play a very important role in the TiO NPs toxicity which was be assessed by traditional methods like growth inhibition assay as 2 well as rapid dehydrogenase activity tests