A study of oxidative stress induced by non-thermal plasma-activated water for bacterial damage
A study of oxidative stress induced by non-thermal plasma-activated water for bacterial damage
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DOI：
10.1063/1.4807133
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发表时间：
2013-05
影响因子：
4
通讯作者：
Qian Zhang;Yongdong Liang;H. Feng;Ruonan Ma;Ying Tian;Jue Zhang;Jing Fang
中科院分区：
文献类型：
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作者：
Qian Zhang;Yongdong Liang;H. Feng;Ruonan Ma;Ying Tian;Jue Zhang;Jing Fang
利用Ar/O2（2%）冷等离子体微射流产生等离子体活化水（PAW）。PAW对金黄色葡萄球菌的消毒效果表明，PAW能有效地杀灭细菌。光发射光谱和氧化还原电位结果表明，PAW的失活归因于活性氧引起的氧化应激。此外，X射线光电子能谱、原子吸收光谱和透射电子显微镜的结果表明，氧化胁迫破坏了细胞表面的化学状态、细胞膜的完整性以及细胞内部的成分和结构。
Ar/O2 (2%) cold plasma microjet was used to create plasma-activated water (PAW). The disinfection efficacy of PAW against Staphylococcus aureus showed that PAW can effectively disinfect bacteria. Optical emission spectra and oxidation reduction potential results demonstrated the inactivation is attributed to oxidative stress induced by reactive oxygen species in PAW. Moreover, the results of X-ray photoelectron spectroscopy, atomic absorption spectrometry, and transmission electron microscopy suggested that the chemical state of cell surface, the integrity of cell membrane, as well as the cell internal components and structure were damaged by the oxidative stress.