Sterilization of Staphylococcus aureus by an Atmospheric Non-Thermal Plasma needle

Abstract

The current study is concerned about the production of plasma needle at atmospheric pressure air for sterilization by killing Staphylococcus aureus using an Atmospheric Non-Thermal Plasma needle. The discharge was produced by applying high voltage AC source of frequency (10) kHz and potential difference of (0-8) kV across the electrodes with flow rate (1-5l/min.) of argon gas. The discharge was characterized by measuring current and voltage with a high frequency. The results showed the best time to kill Staphylococcus aureus was 6 minutes, where the voltage was 8 kV and the distance between the sample of the bacteria and the head of the plasma needle is 2cm and the gas flow is 5L/min.