Abstract
Microbial pollution that takes place by microorganisms has produced various problems in industry and daily life. For example, contaminated water for washing food and contaminated drinking water in aircrafts became topics in connection with troubles in health. Novel antibacterial treatments have been expected to solve the problems up to now. The antibacterial activity on ceramic powders was pointed out with much attention as a new technique that can substitute for some conventional organic agents. And also, carbon materials containing ceramic fine particles showed effectiveness for growth inhibition and adsorption of bacteria. In the present paper, antibacterial activity of inorganic materials, such as CaO, MgO, ZnO and carbon materials containing these ceramics, is explained, and a mechanism of the activity is discussed.