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Treatment with NTAPPJ (non-thermal atmospheric pressure plasma jet) and properties of PTW (plasma-treated water). (a) Schematic view of NTAPPJ device. (b) Photo of treatment of mushroom pieces with NTAPPJ. (c) Photo of treatment of deionized water with NTAPPJ. (d) pH of PTW and level of H2O2 and NOx measured in PTW. Each value is the average of nine replicate measurements. ** p < 0.01, *** p < 0.001.
