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Indexed by:期刊论文

Date of Publication:2012-01-01

Journal:PLASMA PROCESSES AND POLYMERS

Included Journals:SCIE、EI、Scopus

Volume:9

Issue:1

Page Number:17-21

ISSN No.:1612-8850

Key Words:atmospheric-pressure plasmas; cold plasmas; nonequilibrium plasmas; optical emission spectrum (OES); plasma medicine

Abstract:It remains a challenge to generate cold, atmospheric pressure plasmas in sealed packages for biological disinfection. In this paper, we report a plasma device to form large-area and atmospheric-pressure plasmas in a sealed package for the low-temperature disinfection of fungi. The visually uniform plasmas were easily generated in the portable plastic bag containing Candida albicans with a population of 105 spores placed on the plasma device. The He plasma containing about 1% O2 was found to entirely kill resistant Candida albicans with a treatment time of 5?min. Measurements for optical emission spectra and disinfection efficiencies indicate that the plasma-created species such as O radicals and charged species play a major role in the inactivation process.