[15p-B7-1~18] 8.6 Plasma life sciences

△ [15p-B7-3] Conidia Germination Suppression by High Water Fraction Air Plasma Effluent

〇Keisuke Shimada¹, Yutaka Kimura¹, Keisuke Takashima¹, Toshiro Kaneko¹ (1.Dept. of Electronic Eng., Tohoku Univ.)

Keywords:Plasma agriculture, Sterilization effect, Atmospheric pressure plasma

Effect of reactive species in liquid phase on conidia germination has been experimentally investigated, whose densities were controlled with atmospheric pressure air plasma jet which can increase water molecule fraction up to 20 %. Reactive species resulted from increase of water molecule fraction enhanced conidia germination suppression, while long-lived reactive species showed negligible effect. This indicates that short-lived reactive species related to H₂O has an important role in the germination suppression effect.