Using Air Plasma‐generated High‐Valence NO_x for Olive Oil Activation to Produce High‐Performance Antimicrobial Agents

ABSTRACT This study develops a time‐ and performance‐efficient process for oil activation with enhanced bioreactivity. Instead of ozone foaming, plasma‐activated gas (PAG) bubbling has been, for the first time, employed for potent olive oil activation. A parallel system integrating dielectric barrier discharge (DBD) and gliding arc discharge (GAD) devices generates air‐PAG rich in high‐valence nitrogen oxides (NO x ) and O 3 . By adjusting DBD and GAD power ratios, PAG composition is controlled. At a power ratio of 1:1, NO x content and the sterilization performance of thus‐obtained plasma‐activated oil (PAO) reach their peaks. Compared to traditional ozonated oil and plasma‐activated water (PAW), PAO demonstrates superior bacterial‐killing ability and extended storage stability, showing outstanding capacity in medical and food applications as a green agent.