2.3. Treatment with flexible thin-layer DBD plasma
A flexible food-package system designed for generating DBD
plasma within the food package was prepared by using the
conductive layer of a commercial, zippered food package
(129 199 mm) as the powered electrode (Fig. 1). A 0.28 mm-thick
polytetrafluoroethylene (PTFE; 100 100 mm) sheet and a
patterned conductive sheet (70 70 mm) were installed inside the
package (Fig. 1). A bipolar square-waveform voltage at 15 kHz was
applied to the outer electrode while the inner patterned electrode
was grounded. The plasmawas generated at the surface of the inner
electrode at 100-Wpeak power and 2-Waverage power. The carrier
gas used was atmospheric gas containing nitrogen and oxygen