[20p-A106-2~13] 8.4 Plasma life sciences

△ [20p-A106-11] Damage-less Microbial Inactivation Effects of Atmospheric-Pressure Low-Temperature Air Plasma Jets on Plant Nutrient Solutions

〇(B)Kazuki Nomoto¹, Takuto Izumi¹, Mutsumi Aihara¹, Kousuke Takagi¹, Misato Suzuki¹, Takumi Matsumura¹, Akihiro Shirai¹, Takashi Mukai², Retsuo Kawakami¹ (1.Tokushima Univ., 2.Nichia Corp.)

Keywords:atmospheric-pressure low-temperature air plasma, damage-less microbial inactivation, plant nutrient solution

Atmospheric-pressure low-temperature air plasma jet irradiation significantly inactivated the bacteria suspended in plant nutrient solutions without reducing nutrient concentrations in the solutions. The plasma irradiation time required to inactivate bacteria depended on the types of bacteria. Bacillus subtilis was inactivated in 20-30 s, while Staphylococcus aureus was inactivated in 7 min.